The microscope is now set to meas-
ure depth for your eyes only. Do not
disturb any control or adjustment that
you have already made, except the
focusing knob after this initial set-up.
If you accidentally touch the inter-

pupillary adjustment, the left eyepiece
focusing adjustment, or the right eye-
piece centering adjustment, the depth
measurement will likely be subject to
error, unless you go back and re-check
the above alignment procedure.

MAGNIFICATIONS AND REAL FIELDS

WIDEFIELD EYEPIECES

Power Pod
Magnification
10x 15X 20x

Mill. Inches Mill. Inches Mill. Inches
0.7 28.6 1,124 24.7 0.973 17.5 0.686
0.8 25.0 0.984 21.6 0.851 15.3 0.600
0.9 22.2 0.874 19.2 0.757 13.6 0.533
1.0 20.0 0.787 17.3 0.681 12.2 0.480
1 18.2 0.715 15.7 0.619 1.4 0.436
1.2 16.7 0.656 14.4 0.568 10.2 0.400
pe 15.4 0.605 13.3 0.524 94 0.369
1.4 14.3 0.562 12.3 0.486 8.7 0.343
15 13.3 0.525 11.5 0.454 81 0.320
1.6 12.5 0.492 10.8 0.426 7.6 0.300
17 11.8 0.463 10.2 0.401 7:2 0.282
1.8 114 0.437 9.6 0.378 68 0.267
1.9 10.5 0.414 94 0.358 6.4 0.253
2.0 10.0 0.394 8.7 0.341 6.1 0.240
24 9.5 0.375 8.2 0.324 5.8 0.229
22 94 0.358 79 0.310 5.5 0.218
2.3 8.7 0.342 TS 0.296 5.3 0.209
24 8.3 0.328 72 0.284 51 0.200
25 8.0 0.315 6.9 0.272 4.9 0.192
26 ET 0.303 6.7 0.262 47 0.185
29 74 0.291 6.4 0.252 45 0.178
2.8 7A 0.281 6.2 0.243 44 0.171
2.9 6.9 0.271 6.0 0.235 4.2 0.166
3.0 6.7 0.262 5.8 0.227 44 0.160

If 2X Attachment Lens is used field size is
Lens is used field size is doubled.

reduced by a factor of 2. If 44% Attachment

18

BAUSCH & LOMB INCORPORATED



Figure 7

Model BVB-12 with StereoZoom Power Pod, 1.0X thru 2.0X,
with Fluorescent Illuminator attached under Stage.

The ideal illumination for transparent or semi-transparent specimens is achieved by mounting
the Fluorescent Iluminator in the Base as shown above. With this arrangement the illumi-
nation is always centered, requiring no adjustment. The cool daylight type of illumination
is very effective for prolonged use of the microscope, particularly with live preparations.

12 BAUSCH & LOMB INCORPORATED





TABLE OF CONTENTS

Page
Unpacking. 0.0... ne nee ence ens SUF OnE SOW Sue eee Seis Saas 4
Initial Set-Up... 4.
Fastening the Base to the Microscope. . 5
Changing the Magnification. . 5
Illumination. 5
Focusing Tension Adjustment. 13
How to Reverse the Power Pod 13
Cleaning the Optics. . 13
Lubrication. . . 14
Measuring with the Stereomicroscope. . 14
The Stereo Depth Measuring Microscope. . 16
Table of Magnification and Field Coverage. . 18
Accessories for the StereoZoom Microscope. . 19
Exploded View of StereoZoom Power Pod. . 20
Exploded View of StereoZoom Microscope Stand. 22
Exploded View of Nicholas Illuminator . . 24
STEREOZOOM MICROSCOPES 3


ACCESSORIES FOR THE STEREOZOOM MICROSCOPE

include the following:

31-33-36
31-33-24-01
31-33-53
31-33-56
31-34-83
31-05-61-02
31-05-62-02
31-05-63-02
31-50-64
31-50-68
31-26-87
31-26-86
31-26-84-86
31-50-14
31-40-11
31-31-03
31-31-87
31-31-79
31-16-08
31-16-04
31-16-07
31-16-87
31-26-18
31-26-19
31-26-21
31-26-91
31-26-92
31-26-93
31-26-94

Fluorescent Illuminator and base

Reflector Illuminator and base

Nicholas Illuminator, Variable Transformer Base
Nicholas Illuminator, Fixed Transformer Base
Vertical Illuminator

10X Paired Widefield Eyepieces with eyeguards
15X Paired Widefield Eyepieces with eyeguards
20X Paired Widefield Eyepieces with eyeguards
Eye Guards for 15 and 20 Widefield Eyepieces
Eye Guards for 10X Widefield Eyepieces

Black and white contrast plate

Clear glass stage plate

Base, with mirror, glass stage plate

Plastic microscope dust cover

Microscope Case

Lamp for Fluorescent Illuminator

Lamp for Reflector Illuminator

Lamp for Nicholas Illuminator

Micrometer Disc to give .001” at 3X.
Micrometer Disc to give .002” at 2X
Micrometer Disc to give .005” at 1X

Stage Micrometer

1X Attachment Lens

2X Attachment Lens

Lens Shield

Fixed Power Pod, 1.0X

Fixed Power Pod, 2.0X

StereoZoom Variable Power Pod 1.0 thru 2.0X
StereoZoom Variable Power Pod 0.7 thru 3.0%

STEREOZOOM MICROSCOPES 19


‘THESE DIRECTIONS or instructions do not presume to cover all details, varia-
tions, or changes in this equipment; nor to provide for all possible contingencies
to be met in connection with installation or use. We would be glad to help on any
problems not covered in this manual.

RESPONSIBILITY FOR DELIVERY: Every shipment of Bausch & Lomb prod-
ucts is in good condition when it leaves the factory. The transportation company,
when it accepts the shipment, becomes the consignee’s agent and is responsible
for safe delivery.

If shipment shows evidence of rough handling, the receiver should have the
agent note on the receipt “Received in bad order”; or if “concealed damage” is
revealed after unpacking, he should call the representative of the transportation
company within 48 hours and have him make out a “Bad order” report. Unless
this procedure is followed, the customer loses all right to recovery from the carrier.

—Bausch & Lomb Incorporated

Illustrations shown berein are of Bausch & Lomb products current at the time of this printing. However
due to our constant efforts to improve and refine, we reserve the right to supply products that may differ
slightly from those shown in accompanying illustrations.


STEREOZOOM POWER POD

Legend Description Drawing No. Legend Description Drawing No.
1—Eyepiece Adj. Ring... 312694-129 39—Lens “C”. 310562-024
2—Eyepiece Adapter . 312694-133 40—Tube, 310562-101
32-64 U8T Screw. 97226-1210 41—Diaphragm.. 310562-104
4—Eyepiece Ring..... 312694-175 42—Dust Seal Retainer... .312694-130
5—Magnification Knob.......312694-244 43—Dust Seal Washer......., .312694-234
6—Set Screw 312694-236ND 44— #2-64 U6S Screw. . 96226-1203
7—Mirror Housing... 312694-231 45—Dust Seal Cap. 312694-131
8—Pivot Screw “A”. 312694-144 46—Dust Seal... 312694-132
9—F-309 Washer . 9008-377 47—Pivot Screw “B”,, 312694-145,

10—F-108 Washer. . . 90008-281 48— #4-48 F6S Screw... 96206-1419

11—2-64 F4S Screw 96206-1213, 49—F-120 Washer... 90008-125

12—Mirror Clip Assy. (short). . .312694-251 50—Eyepiece Mount Left... ..312694-138

13—Mirror “A”, ...312694-031 51. -Dust Cover.............,.312694-030
14—Eyepiece Mount Support. ..312694-228 52— Dust Cover Retainer... ..312694-135

15—Lock Nut. 312694-115 53—Mirror Mount Left. 312694-222

16—Bearing Screw. . 312694-118 54—Mirror “B”............ ..312694-032

17— #6-32 G12 Screw. 96208-0601 55—Mirror Clip Assy. (long). . .312694-250

18—.1562 Steel Ball. ...312694-152ND _ 56—Lens “AB” Retainer... .312694-108

19—F-306 Washer... . 9008-369 57—Lens “AB” Assy...........312694-023

20—Gear Lock Nut. ..........312694-169 58—Lens “AB” Mount... 312694-107

21—5133-25 Tru-Are 59—Guide Bar......... 312694-106

Retaining Ring. . S2698-ALIND 40, Gaver Spring. oso oos.,., 312604111

22—F-310 Washer............90008-378 @_Gal Mount “A”... S13604.598

23—Objective Driven Gear... .312694-121 Bick Boxe sie csscsovse a SEOAGATND

24—Driver Gear Support. . ....312694-239 Geil Moun" saeoaenes
25—Set Screw....... ,s312604K220ND gg pac ae Stppnatog

26—F-305 Washer... .90008-368 Gancuuate Mame musceetio

27—Drive Gear Shaft..........312694-139ND 66 Teng “GD” Assy... .312694.026

28—Fad MBM scone SOL AESA TSO 67—Lens “CD” Retainer. . ....312694-109

29—Lead Screw Follower. .... .312694-103 Gi_#GAU FIRS SEGA... SSUEATOO

30—Cap Screw. ............1.312694177ND — 6y_§.306 Washer... 6008 485

31—Objective Mount Cover. ...312694-225 G0 #846 F9S Sexewcess,, SEQ0EAUST

32: Monat Springs: qaiZeeli2 71—Lead Screw Mount... ,..312694-227

33—F-258 Pin, . 0011-269 72—Lens “EF” Mount. . . . .312694-235,

34—Lead Screw. . 312694-241 peau.  canoabetAe

35— # 6-40 F298 Screw... ,.96206-1629 TA—Lens “EP” Assy...........312694.029

36—Retainer. .. 310562-103 75—Lens “EF” Retainer.......312694-114

37—Lens “AB” Assy...........310552-023 76—Cover Gasket............312694-113

BB—Spacer..66 666666... 310562-102 77—Objective Cover. ,.... 312694-230

STEREOZOOM MICROSCOPES 21


the metal lip over the glass around the
whole circumference by holding the
mount at a 45° angle and rolling it on
a hard surface such as a table top.

4, Now replace the field diaphragm
and disc assembly by screwing it in
until the scale comes into sharp focus
when viewed through the eyepiece.

To calibrate a Stereomicroscope
with the StereoZoom Variable Power
Pod, set the 31-16-87 Stage Microm-
eter on the stage of the microscope,
after inserting a micrometer disc in one
eyepiece as above described. Line up
the two scales so they may be com-
pared for size. Now by varying the
magnification by the Power Changer
Knob you may obtain the desired scale
interval on the specimen. For example,
using the 31-16-07 scale, adjust the
magnification until exact matching of
all lines occurs, or, using the 31-16-04
scale, adjust the magnification until
every two intervals in the stage mi-
crometer matches every five intervals
in the eyepiece scale. The microscope
is now calibrated for direct reading.

To calibrate a Stereomicroscope
with Fixed Power Pod, set the
31-16-87 Stage Micrometer on the
glass stage, after inserting a microm-
eter disc in one eyepiece as above de-
scribed. Line up the two scales so they
may be compared for size. Note the
ratio of eyepiece scale divisions to the
stage micrometer scale intervals. This
ratio can then be used to make meas-
urements in the specimen plane. For
example if 0.100” on the stage microm-
eter scale was found to be 48.7 divisions

of an eyepiece scale, then each eyepiece

48.7
The Stereo Depth
Measuring Microscope

The Stereo Depth Measuring Mi-
croscope (Fig. 11) utilizes the ob-

scale interval is = 0.0021”.

server’s sense of depth perception to
make accurate depth measurements on
surface details of an object, without
physically touching the object. Ability
to use this device varies markedly de-
pending on the type of specimen, the
manner in which it is illuminated, and
on the individual observer’s stereo
acuity, so that no definite claims of
accuracy can be made. However, to
convey an impression of the limiting
accuracy attainable, a skilled observer,
operating under ideal conditions,
should get repeatability of a depth
measurement within about +0.01mm
(+0.0004”).

This device is a 20X Stereomicro-
scope utilizing two identical stereo
reticles having concentric dot and ring
patterns, to cause image fusion at a
definite plane in space. Depth meas-
urement is read on a dial indicator,
having a range of 1 inch, and a least
reading of 0,001”.

Initial alignment of the device to the
observer’s eyes is necessary. For this
purpose a square alignment pattern
engraved on a 1 x 3 inch glass slide is
used. This slide is placed centered on
the stage of the microscope. Focus the
microscope until the right image of the
alignment square appears in sharp
focus. Then focus the left eyepiece
adapter tube by rotating the eyepiece
focusing ring until the left image ap-
pears in equally sharp focus.

Now carefully and accurately center
the alignment square to the left circu-
lar dot pattern. Then, with equal care
and accuracy, center the right dot
pattern to the alignment square.

If the above has been carefully fol-
lowed, the dot and square should ap-
pear to lie in the same plane in space
when using the instrument binocu-
larly. If not, use the lateral motion of
the right reticle centering screws to
bring them into the same plane.

16

BAUSCH & LOMB INCORPORATED



Where more intense light of less
diffuse nature is needed the Reflector
Illuminator is recommended. (Fig. 4.)
For highly directional spotlight-type
illumination, to bring out shadows of
surface contours the Nicholas Illumi-
nator is recommended. * (Fig. 5.)

The Nicholas Illuminator is sup-
plied either with a 3-step variable light
intensity transformer, or with a single
step fixed intensity transformer. Wher-
ever possible, it is desirable to mount
the illuminator to the microscope so
that the illumination stays centered as
the microscope is focused on specimens
of different thicknesses.

Straight top lighting, called vertical
illumination, sometimes brings out sur-
face detail in polished and etched
metallurgical specimens, and also
penetrates into steep-walled holes,
cracks, or cavities in a specimen.

Any of the 3 attachable lamps may
be used in conjunction with the Verti-
cal Illuminator, but if the specimen is
highly polished, the more diffuse
sources are recommended, in order to
provide illumination reasonably free
of “‘hot-spots.”” Fig. 6 shows the Verti-
cal Illuminator in position for use,
with the Nicholas Illuminator attached
in its recommended position.

Trans-illumination for transparent
or semi-transparent specimens is also
available in several ways. This form
of lighting requires the Base with clear
glass stage plate. Daylight sky illumi-
nation is sometimes used, but of course
requires a bright day and restricts the
use of daytime hours.

The most generally useful form of

*Note. The circular adapter on the jackknife
arm for the Nicholas Illuminator is a cone,
not a cylinder, hence the mating cone on the
Nicholas Illuminator fits into this adapter in
one direction only. If it seems to fit too
tightly, reverse it.

trans-illumination is supplied by the
Fluorescent Illuminator, (Fig. 7)
mounted directly beneath the stage in
place of the mirror. This gives a cool
diffuse lighting which is always in
good alignment and has sufficient in-
tensity for almost any type of semi-
transparent specimen.

To mount the Fluorescent Illumina-
tor in place of the mirror, remove the
clear glass stage plate, and press the
mirror sidewards, pulling the opposite
spring-loaded support in the opposite
direction, thereby releasing the mirror.
Turn the keys at the end of the sup-
porting posts horizontal, and slide the
illuminator grooves onto these keys,
orienting the illuminator with the
switch outward. Press all the way in
until the locating holes on the end of
the illuminator engage the prongs of
the spring clip at the rear of the base.
The illuminator is now ready to use.

The mirror may, of course, be used
in conjunction with any of the avail-
able sources of light. Where high
brightness is needed, use the concave
reflector side. Where lower level dif-
fuse lighting is required, use the plano
diffusing mirror. The concave reflector
may also be used to produce oblique
lighting from below. This is sometimes
useful in producing a very striking dark
background effect, in which the speci-
men glows bright in contrast to a dark
background.

The Nicholas Illuminator may be
fitted into the Port at the rear of the
Base for Trans-illumination. Use the
diffuse side of the substage mirror for
this.

To replace a burned out lamp in the
Nicholas Illuminator, remove the two
screws which hold the two halves to-
gether, draw apart, and remove the
lamp by pressing down and turning
counterclockwise. Insert a new lamp
by the reverse procedure.

8

BAUSCH & LOMB INCORPORATED



An alternative scheme for focusing
may be used. Instead of closing either
eye, the left or right side can be blocked
off by holding a bit of opaque material
below one side or other of the body,
and the same basic procedure followed
as above. Remember to first focus the
whole microscope to suit the right eye,
and then focus the left side individually
with the threaded eyepiece adapter
tube.

The stereomicroscope is now in ad-
justment for your eyes and may be
used with ease and comfort.

Fastening the Base to the Microscope

The Trans-illumination base is fast-
ened to the microscope by a sliding
metal catch located underneath the
stage. See Fig. 1. Open this catch by
sliding it toward the mirror. Remove
the circular stage plate from the stage.
Set the microscope on the base, and
lock in place by sliding the catch back
—away from the mirror. Reinsert the
stage plate.

Changing the Magnification

Bausch & Lomb’s exclusive Stereo-
Zoom Power Pod permits you to change
the power continuously to exactly the
best magnification for a given specimen.
For the first time, it becomes possible
to see an object whole at low power,
and then concentrate on some given
detail by increasing the power con-
tinuously to the desired value. There
are no annoying blind spots or jumps
in magnification as the power is
changed.

The Power Changer Knob is located
at the top of the Pod and may con-
veniently be operated with the elbow
resting on the table surface. It is en-
graved in steps of 0.1 throughout the
power range. In order to maintain
good focus while changing the magni-

fication, always make initial focus set-
ting with the power changer knob at
the highest magnification position.

If you have a Stereomicroscope with
Fixed Power Pod, or if you wish to
extend the power range of the Stereo-
Zoom Power Pod this can be done by
changing the eyepiece power or by
adding attachment lenses below the
objective. (Fig. 2.) Widefield Eyepieces
are available in 10X, 15X and 20X.
Power changing attachment lenses are
available in 2X and 14X. The former
has a working distance of about 114”.
The 14X attachment has a working
distance of about 7”, and hence is re-
stricted to use on stands where this
distance is attainable.

Eye-guards are supplied which slip
over Wide Field Eyepieces. These
guards exclude stray light and orient
the eyes in the proper relationship to
the eyepieces. The longer eye-guards
are for the 10X eyepieces; the shorter
ones for the 15X and 20X.

The 10X widefield eyepieces have a
long eye-relief, permitting comfortable
viewing of the full field while wearing
eye glasses. The eye-guards should not
be used when wearing eyeglasses.

Illumination

Top lighting for opaque specimens,
may be achieved in a number of ways.
The method chosen will depend on the
nature of the specimen surface. The
specimen may be set on the glass stage
plate, or if a contrasting background
is desired, on the black and white con-
trast plate.

If the surface is diffusing, (e.g., paper,
fabric, wood, insects, crystals, leaves,
paint, etc.) some form of oblique light-
ing is useful. Where a cool diffuse light
is required, the Fluorescent Illumina-
tor is recommended. (Fig. 3.)

STEREOZOOM MICROSCOPES



BAUSCH & LOMB
STEREOZOOM MICROSCOPES

DIRECTIONS FOR USE

Unpacking

The microscope is carefully packed to
protect it from damage during ship-
ment. Unpack it with similar care, and
check it for any evidence of damage in
shipment. Check the accessories against
your order and packing sheet.

Every shipment of Bausch & Lomb
products is in good condition when it
leaves the factory. The transportation
company, when it accepts the ship-
ment, becomes the consignee’s agent
and is responsible for safe delivery.

If shipment shows evidence of rough
handling, have the agent note on the
receipt “Received in bad order,” or if
concealed damage is revealed after
unpacking, call the representative of
the transportation company within 48
hours and have him make out a “Bad
Order” report. Unless this procedure
is followed, you lose all right to re-
covery from the carrier.

Initial Set-Up

Place the object to be viewed on the
stage. Insert a pair of eyepieces in the
eyepiece tubes. Direct some light onto
the object (sce section on “Illumina-
tion” for further details).

Space the eyepiece tubes properly
for your eyes, so that you are seeing
with both eyes at once. This can be
checked by alternately closing the left

and the right eyes and verifying that
both fields are visible without moving
the head.

Focus the microscope up or down
until the object comes in focus. Close
the left eye and focus carefully for the
right eye only. Then close the right
eye, open the left, and leaving the
focusing knob untouched, focus the
left eyepiece adapter tube up or down
by rotating the eyepiece focusing sleeve
until the left image appears in sharp
focus. On variable power microscopes,
focusing of left eyepiece should be
done with power changer knob set
at lowest magnification position. All
optics are Balcoted to improve image
contrast and reduce flare.

Figure 1
No. 31-26-84 Base for Trans-illumination
= Mis

_—

4

BAUSCH & LOMB INCORPORATED



Figure 11

Model ADM-2 Stereo Depth Measuring Microscope.

STEREOZOOM MICROSCOPES 17


Figure 3

Model BVB-73 with StereoZoom Power Pod, 0.7X thru 3.0X,
with Fluorescent Illuminator attached for top oblique lighting.
The Fluorescent Iluminator gives a cool diffuse light of a daylight character. It may be
fastened to the Power Pod at the front, as shown, or at either side. This method of mounting

keeps the illumination centered regardless of specimen thickness. Optionally it may be mounted
on a separate base and used as a movable source.

STEREOZOOM MICROSCOPES



STEREOZOOM MICROSCOPE STAND

Legend Description Drawing No. Legend Description Drawing No.

TARR» occ cenermne seen et 312688-118 20—Rack 312688-109
2—Lock Lever Left. . -312688-121 21—Slide... 312688-116
3—SD-119 Screw... 90047-182 22—Front Gib. : 312688-112
4 —Upright.neicccnscwencns: 312688-105 23—Gib Screw... «.. sone e+ 312688-143

5—Gib Screw “A” .312688-145, 24—Screw...... 312688-142ND

6—Spring... -312688-132 25—Gib Screw “C” 312688-144
7—Rear Gib.......... «++ -312688-111 26—Pinlon sa5i4/535 vai ss nisidig goes 312688-108
8—4-48 F8S Screw 96206-1410 27—Focusing Knob. .312688-146
9—Glass Plate. «31-26-86 28—Gib Screw “A” 312688-145,
10—Bal Spring.............05 312684-111 29 — Bi. ce wrmneeetcn senesced 312688-124
11—.125@ Steel Ball. .531271-316ND 30—Spring Clip Assy. 312688-128
12—Spring Cap... -312684-104 31—8-36 F145 Screw. . 96206-1832
13 — Spring: .2 hii vsuwrgaeee 312684-105 32—SF82 Screw...........05+ 90049-119

14—Mirror Axle... .312684-103 33—Nut..... 312688-103ND

15—Shaft Retainer “A”... ... .632557-107 34—SF80 Screw... 90049-117
16—Selftap. Screw.......... -632557-324ND 35—Base.... 0.2... cece ee eee 312684-102
17— #8-32 F10U Screw. ..... .98206-0804 36—Base Lock. . 312684-106

18—SD-5 Screw veces 90047214 37—SF-79 Screw 90049-116
19—SF-83 Screw..........000+ 90049-100 38—Mirror Assy............+5 312684-108

STEREOZOOM MICROSCOPES 23


*StereoZoom Microscopes

Fixed Power Models
and

StereoZoom Variable Power Models

REFERENCE MANUAL

* Trademark of Bausch & Lomb Incorporated

BAUSCH & LOMB

INCORPORATED

ROCHESTER 2, NEW YORK



Figure 5

The Nicholas Illuminator mounted on the Model BFB-1 StereoZoom Microscope.

The Nicholas Illuminator may be mounted directly into the Port in the arm as shown, or if
suspended by the jackknife support, at any of 3 other locations, as previously indicated for
other sources. These methods of top lighting keep the illumination always centered, regardless
of the thickness of the specimen.

Optionally, the illuminator may be fastened directly to the threaded hole in the top of
the transformer, and used as a movable source to bring light in from any direction.

Also it may be used for transmitted light by inserting it in the Port at the rear of the
base, using the frosted side of the substage mirror to direct the light upward.

10 BAUSCH & LOMB INCORPORATED



Figure 4

The Reflector Lamp’ shown in position for top oblique lighting on Model AVB-12
with StereoZoom Power Pod, 1.0X to 2.0X.

The Reflector Illuminator gives moderately directional lighting of fairly high intensity.
It may be fastened to the Power Pod at the front, as shown, or at either side.
This method of mounting keeps the illumination centered, regardless of specimen
thickness. Optionally it may be mounted on a separate base and used as a movable source.

STEREOZOOM MICROSCOPES



Figure 2

Model BFB-1 StereoZoom Microscope with the 2X Attachment Lens shown in place below
the Fixed Power Pod. The ¥4X Attachment Lens and Lens Shield, which are interchange-
able with the 2X Attachment Lens, are also shown.

BAUSCH & LOMB INCORPORATED



BAUSCH & LOMB INCORPORATED

20



Sketched below are the main offices and works of
Bausch & Lomb Incorporated at Rochester,
New York. There are other Bausch & Lomb and.
affiliated plants in Rochester, N.Y., California,
Canada, Brazil, Argentina, England, Ireland,
Switzerland, Australia, and Sweden. Sales offices
are in many of the larger cities.

312694-237ND, 10, V-62

PRINTED IN U.S.A,



Model BVB-73 StereoZoom Microscope

BAUSCH & LOMB INCORPORATED



Figure 8

Model KVB-12 StereoZoom Microscope with Reflector Illuminator.

This Model, has a second focusing dovetail slide giving an extended focusing range, and an

inclination joint. It is a versatile tool for operation and inspection in industry. Any of the

4 Power Pods, Fixed Power or StereoZoom Variable Power, may be used. The above
photo shows the StereoXoom Pod, 1X thru 2X, in use.

Focusing Tension Adjustment

The tension of the focusing mecha-
nism may be adjusted to suit the user’s
needs. On the back of the stereomicro-
scope’s focusing mechanism there are
two small Allen-head screws, located
slightly below the centerline of the
focusing knobs. By turning these screws
slightly clockwise or counterclockwise
the tension will be increased or de-
creased as desired. Uniform adjustment
of the two screws is recommended.

How to Reverse the Power Pod

The Microscope Power Pod may be

easily reversed by swinging out the two
spring clips at either side of the sup-
porting ring. This unlocks the Pod
and it may be lifted out and reversed.
Press the spring clips back in place.

Cleaning the Optics

The Power Pod is dust sealed from
below, and contains glass dust seals
within each eyepiece adapter tube. Do
not attempt to disassemble the Power
Pod and StereoZoom Power Changer.
These have been factory cleaned, al-
igned, and sealed. Eyepieces should be
kept in place at all times to prevent

STEREOZOOM MICROSCOPES

13


Figure 10

The Model SKVB-73 for extended area coverage and use on sloping surfaces, etc. Shown in
use is the StereoXoom Power Pod 0.7 X thru 3.0X, but any of the 4 basic Pods may be used.

The Pod rotates within its own axis.

There are adjustments for orienting the Pod in

vertical and horizontal planes.

ing .002” intervals with a Pod magni-
fication of 2X, the 31-16-07 measuring
.005” intervals with a Pod magnifica-
tion of 1X. Also available, for calibra-
tion of the microscope, is the 31-16-87
Stage Micrometer, engraved in 0.005”
intervals. A variety of other linear and
grid pattern discs, as well as special
forms, are also available for particular
application.

The following procedure may be
used to insert the Micrometer Disc in
the Widefield Eyepiece:

1. Remove the field diaphragm unit
by unscrewing it from the bottom of
the eyepiece.

2. Place the Micrometer Disc on top
of the field diaphragm with the en-

graved scale facing down.

3. You will notice that a thin metal
lip extends above the upper glass sur-
face. Using a pencil or similar object,
apply pressure against the outside of
this lip, forcing it inward and down-
ward against the glass. Do this at three
more or less symmetrically placed
points about the circumference. The
reticle disc is now held within the
mount securely enough to stay in place
under normal conditions of use. A
moderate amount of pressure against
the opposite (pattern side) face of the
disc will push the reticle out of the
mount, should it be desired to remove
it. If the reticle is to be permanently
installed in the eyepiece, one can bend

STEREOZOOM MICROSCOPES

15


*StereoZoom Microscopes

Fixed Power Models
and

StereoZoom Variable Power Models

REFERENCE MANUAL

* Trademark of Bausch & Lomb Incorporated

BAUSCH & LOMB INCORPORATED
ROCHESTER 2, NEW YORK


Legend Description Drawing No. Legend Description
313353-135 16—Line Cord Assy......0..05
2—Tru Arc Retaining Ring. ..313353-128ND  17—Adapter
3—Lamp Mount...........05 313353-167 18—Linkage Locknut

4—Lampholder
5—Screw
6—Lamp
7—Retainer.
8—Lens A..

9—Lens Barrel and
Lens B Assy.

10—Spring...
11—Shield
12—Lens Mount Assy.
13—LW-91 Cord Se
14—Interlock
15—Screw...

NICHOLAS ILLUMINATOR

-313353-136ND 19 —Linkage
.313353-147ND  20—Linkage Mount Screw
.31-31-79 21—Washer
.313353-106 22—Selector Knob,
-313353-021 23—Switch Nut...

.313353-163ND ;
penn 25—Wire Connector

“319363148 26—Star Washer...

.313353-132 27—Selector Switch........

-313353-119ND 28—Transformer.
313353-111

.313353-150ND BO0—COVEE es eecccesceeer

Drawing No.

-313353-115
.313353-109
-313336-107
.313336-107
.313336-107
-313353-143
-313353-146
-313353-125

313336-101

-313353-123ND
.313353-125

313353-168

.313353-112
.313353-151ND.

313353-110



You have become the owner of a fine quality instrument. There is no similar in-
strument made anywhere in the world that will give you greater satisfaction or
more dependable service. From the raw materials used in making optical glass to
the final inspection of finished instruments, Bausch & Lomb products are made
under the rigid control of optical, electronic, and mechanical experts. The for-
mulae for the glass, and the design and manufacture of all parts contribute to one
purpose—a product which will afford the highest satisfaction.

GUARANTEE: If a product of our manufacture proves defective in material or
workmanship, an appropriate adjustment will be made . . . parts not of B&L man-
ufacture, carry the guarantee of their manufacturers. This guarantee does not
cover damage in transit; damage caused by carelessness, misuse, or neglect; or
unsatisfactory performance as a result of conditions beyond our control.

—Bausch & Lomb Incorporated



Figure 6

Model AVB-73 StereoZoom Microscope with Nicholas Illuminator and Vertical Illuminator.

The Vertical Illuminator reflects light directly downward on the specimen. The preferred
arrangement, shown above, is to fasten the Nicholas Illuminator to the Power Pod, so that
the illumination always stays centered regardless of specimen thickness.

The Vertical Illuminator may be used with any of the four Pods, Fixed Power or
StereoZoom variable power. It is shown on the StereoZoom Pod, 0.7 thru 3.0X, in the
picture above. It may also be used with other light sources.

STEREOZOOM MICROSCOPES



Figure 9

The Model SFB-2 provides coverage of large specimen areas. Shown in use is the Fixed
Power Pod, 2X, but any of the 4 Power Pods may be used.

dust settling on the eyepiece dust
shields. However, if dust does accumu-
late here, it can be removed by blow-
ing with a syringe, or by cleaning with
a moist cotton swab ona stick.

The external surfaces of the eye-
pieces and the bottom surface of the
Pod may be cleaned in a similar man-
ner. If a lens gets a greasy smear on an
external surface it may best be cleaned
with a cotton swab moistened with a
soap or detergent solution, followed by
a dry cotton swab.

Lubrication

The power changer mechanism is per-
manently lubricated at the factory and
requires no periodic lubrication.

The focusing slide should be occa-
sionally wiped clean, using a solvent
such as Xylol or alcohol, and relubri-
cated with a light coating of petroleum
jelly. Do not lubricate the rack teeth.
An occasional cleaning of the rack
teeth with a small stiff brush is
recommended.

Measuring with the Stereomicroscope

The Stereomicroscope may be used as
a measuring instrument by placing a
micrometer disc in one of the eye-
pieces. The three discs designed and
particularly recommended for this
microscope are the 31-16-08 measuring
.001” intervals with a Power Pod mag-
nification of 3X, the 31-16-04 measur-

14

BAUSCH & LOMB INCORPORATED