φSize*In case of a special order,
please specify the distancefrom the end face（minimum 0.6mm）●HEADEntry column

Item

2-point
mesuringhead
3-point
mesuringhead

Dial Gauge●Standard type

●Short type

●Bottom type

NO-02

XK-02

SL-02

NO-03

XK-03

SL-03

●Standard type

●Short type

Model No.

S-LINE PRECISION MEASUREMENTPLUG GAUGE

Measurement Point

NO-03-3P（1）Origin setting with reference ring gauge（2）Just plug in
Not only skilled workers, anyone canperform highly accurate measurements.

XSO-03-3P

S-LINEPRECISION MEASUREMENTPLUG GAUGE HOLDER

Workpiece size

Workpiece tolerances

Position ofmeasurement point

Standard *See inside
Special order （Probe material

Standard（Carbide coating polished ﬁnish）
Special order（Diamond） *Not available for SL-02 and SL-03）

Low error in a stable form of measurement
Repeatability less than 1μm
Titanium coating prevents wear and maintains high precision
2-point
head●OPTION
Item

Depth stopper*The appearance and speciﬁcations
are subject to change without
notice for product improvement.
*There may be a slight diﬀerence incolor between the printed material
and the actual product.

Purchase（Model No.…
Not necessary）

Purchase（Size…

）

Not necessary

Carbide（up to φ50mm）

Ceramic（up to φ50mm）

Purchase（Model No.…
Not necessary）

MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp№23041000PA

head

Suitable for roundtriangle-shaped
holeABSmm
ABS/SETMIN

Bore measuring gauges

Advantages◎ Easy pass-fail judgement
Pin gauge・Limit plug gauge

Disadvantages

× Unable to take readings
× Unsure of workpiece shape◎ Wide measurement range allows

× Unstable measurements
× Requires a certain skill◎ Wide measurement range allows

× Due to the longer length of the probe,

Bore gauge）

5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518

3-point

measurement of various diameters

Purchase（Model No.…
Not necessary

Niigata Seiki Co., Ltd.

Suitable foroval-shaped
hole■Distributor

ZERO/ONCAL

Comparison of advantages/ disadvantages of bore measuring gauges

Entry column

Steel

Accurate

Workpiece*Measuring range is to be determined by Niigata Seiki based on the workpieace tolerance.

Dial gauge

Dedicated gauge head to be used in mass-production lines
Unlike limit gauges, numerical control is possible
No air-piping equipment is required and can be used at any site

Measuring Point（Speciﬁed/ ﬁt tolerances）

Ring gauge

Eﬃcient

S-LINEPRECISION MEASUREMENTPLUG GAUGE HEAD

（0.001mm unit）

HolderEasyplug in

S-LINE PRECISION MEASURING PLUG GAUGE HEAD iscomplete custom-made product to meet customer'sworkpiece size.
Please ﬁll in the form below and contact your distributor.

（Please specify inincrements of 0.001mm）

INQUIRY SHEETFor increasing eﬃciency + accuracy of internal diametermeasurement in inspection process of mass-produced products.

Three-point
micrometermeasurement of various diameters◎ Stable measurement by three-point contact
Disadvantages of Bore gauge removed◎ Measure while placing the bottom of the gauge
head against the bottom of the hole

→ Stable measurement◎ Custom probe position
S-LINEPRECISION
MEASUREMENTPLUG GAUGE

Disadvantages of Limit plug gaug/
Bore gauge/ 3-point micrometer removed→ Enables measurement at precise points◎ Point contact by ball probe

Disadvantages of Limit plug gaug/
3-point micrometer removed→ Enables measurement at precise points

How to measure

Go/ Nogo
judgement
Manually
locatemeasurement
pointsit is diﬃcult to know where being measured

× The probe needs to be in contact with allsides of the workpiece× Unsure of workpiece shape

Ratchet toadjust diameter× Small measurement range due

to dedicated design for the workpiece◎ Major advantage of using

for mass-produced workpieces ”smaller measurement ranges
allows greater accuracy”

Just plug inand measureinstantly

φ6 〜 φ8
φ8 〜 φ20

M6 ×
P0.75

0.15

0.6

NO-03

φ40 〜 φ50
φ50 〜 φ100

M10 ×P1.0410.2

0.8φ100 〜 φ280

272942.5

33.5

4536

-0.015 / -0.05-0.02 / -0.06-0.03 / -0.06-0.03 / -0.08

56−L1L2

○7.5

X

180°

10

*1 : Excluding mounting area

●2-point measuring head ＜Short type＞

XK-02

Size φZ（mm）
φ6 〜 φ8
φ8 〜 φ20

Dimensions of each part（mm）
Mounting Measuring range（mm）
Clearance*1 Gauge
screw
Overall
Toleranceof
Measurement groove
diameter Standard Expansion length L1 length L2outer diameter
point X
M6 ×P0.75

0.150.632

φ15 〜 φ40

XK-03

φ40 〜 φ50
φ50 〜 φ130

M10 ×P1.0

23.5
25.5

0.2

0.8

37.5
28.5

φ130 〜 φ280

-0.015 / -0.05

1.6

Dimensions−L1
L2-0.02 / -0.06-0.03 / -0.06

2.5○-0.03 / -0.08

φZ

Model No.

X

180°

*1 : Excluding mounting area

●2-point measuring head ＜Bottom type＞
Size φZ（mm）

SL-02

φ10 〜 φ20
φ15 〜 φ40SL-03

φ40 〜 φ50
φ50 〜 φ130

Dimensions of each part（mm）
Mounting Measuring range（mm）
Clearance*1 Gaugescrew
OverallTolerance
ofMeasurement groove
diameter Standard Expansion length L1 length L2
outer diameter
point X
M6 ×P0.75
M10 ×
P1.0

0.15

0.2

−0.3

32

37.5

23.5
25.5
28.5

-0.015 / -0.05-0.03 / -0.06

Dimensions
L1L2

0.6

-0.02 / -0.06○1.2-0.03 / -0.08

X

180°

*1 : Excluding mounting area

●3-point measuring head ＜Standard type＞
Size φZ（mm）

Dimensions of each part（mm）
Mounting Measuring range（mm）
Clearance*1 Gauge
screw
OverallTolerance
ofMeasurement groove
diameter Standard Expansion length L1 length L2
outer diameter
point X

φ15 〜 φ40

NO-03-3P

φ40 〜 φ50

M10 ×P1.0410.2

2942.533.5-0.03 / -0.08

Dimensions
L1L26-0.03 / -0.06

0.6

φ50 〜 φ100-0.02 / -0.06

○7.5

X

120°

*1 : Excluding mounting area

●3-point measuring head ＜Short type＞
Size φZ（mm）

Dimensions of each part（mm）
Mounting Measuring range（mm）
Clearance*1
screw
Overall
Gauge
Tolerance ofMeasurement groove
diameter Standard Expansion length L1 length L2
outer diameter
point X

φ15 〜 φ40

XSO-03-3P

φ40 〜 φ50
φ50 〜 φ100

M10 ×P1.026.5
0.20.638.5

L1L2-0.02 / -0.06-0.03 / -0.06

29.5

Dimensions-0.03 / -0.08

3.5

○φZ

Model No.

φ20φ280

M10 ×
P1.0

19＊
φ868.57040g

SKP-HM-02-150

80g
85g

φ15

φ819＊

20g

M6 ×
P0.75

50g
75g

38130g60

150

SKP-HM-GS-03-60

3060

100

SKP-HM-03-60

150

SKP-HM-03-150

RING GAUGE（Steel・Carbide・Ceramic）
With an indication of the actual
measured value, suitable for use
as a high precision measuring master.
Production available in 0.001mmincrements.

Steel Wide range ofsizes in stock<Available in all sizes>

Carbide Excellent abrasion

resistance and long-life<Up to φ50mm>

Ceramic Easy maintenancewithout risk of rust
<Up to φ50mm>

DIAL GAUGE

Niigata Seiki recommended equipped model.
We oﬀer a wide variety of choices from digital built-in
wireless types to a high-precision dial comparator.

●Measuring force: Less than 1.5N
●DEI-121MH、DEI-121MW …… Large LCD type
●DEI-122MH、DEI-122MW …… Digital＋analog display type
●KMC-1001 ……………………… Ultra-high precision dial comparator
Model No.

DEI-121MHDEI-121MW
DEI-122MH
DEI-122MW
KMC-1001

Measuring Resolution
range
（mm）
（mm）

12.5

0.1

DEI-121MH
DEI-121MW

Maximum Hysteresis Repeatability
error
error
（µm）
（µm）
（µm）

Reading display（mm）

0.00010.01/0.005/0.002/0.001/0.0005/0.0001

0.00050.01/0.005/0.002/0.001/0.0005

40.0001

0.01/0.005/0.002/0.001/0.0005/0.0001

1.80.0005

0.01/0.005/0.002/0.001/0.0005

410.001

DEI-122MH
DEI-122MW

0.001

1.8

KMC-1001

Connection unit
for data transmission

0.5

DTC-M1（wired）

21WI-1M（wireless）/DTC-M1（wired）

0.6

0.5

DTC-M1（wired）

21

WI-1M（wireless）/DTC-M1（wired）

0.5

0.5

−0.6

φZ

Model No.

φ6100

（Digital indicator・Dial comparator）*Diamond probe not applicable

φZ

Model No.

Weight70

SKP-HM-02-100

SKP-HM-02-50

30g〜

φ15 〜 φ4035.5Dimensions

φZNO-02

Size φZ（mm）

SKP-HM-02-32
SKP-HM-GS-02-50
SKP-HM-02-50
SKP-HM-02-100
SKP-HM-02-150
SKP-HM-GS-03-60
SKP-HM-03-60
SKP-HM-03-150〜

Model No.

Dimensions of each part（mm）
Mounting Measuring range（mm）
Clearance*1 Gaugescrew
OverallTolerance
ofMeasurement groove
diameter Standard Expansion length L1 length L2
outer diameter
point X

18.5

50

φ15

●2-point measuring head ＜Standard type＞

33

22＊

Model No.

50

φ15Compatible Mounting
head size screw dia.
of head（mm）

φ10φ10φ8●Mountable dial gauge: Stem diameter φ8mm H7
Stem length 37mm or larger (including probe)

3-point measuring heads＜Standard type＞

SKP-HM-GS-02-50
9.5

32

19＊

NO-03-3P (φ20)

7φ8●Head … Material: Tool steel (titanium nitride coated) / Hardness: approx. HV 2200●Probe … Material: Carbide coating polished ﬁnish (diamond probe available at an option)*Gauge head is complete custom order product. Please inquire with the inquiry sheet on the back.

SKP-HM-02-32

Combined with the Gauge head, hole diametermeasurement of mass-produced products becomes"easier", "more eﬃcient" and "more accurate".

22＊

Overwhelmingly improves the eﬃciency of sites where requires frequent
inspections of ﬁxed sizes such as mass-production lines.
Complete custom order to be used with a holder and dial gauge.

*Distance between
opposing side

φ8SL-03 (φ20)

2-point measuring head＜Bottom type＞

S-LINE PRECISION MEASUREMENTPLUG GAUGE HOLDER

φ15

S-LINE PRECISION MEASUREMENTPLUG GAUGE HEAD

120°X
*1 : Excluding mounting area

DEPTH STOPPER

Depth stopper to ensure measurement at a constant depth.
More stable measurement of mass-produced products leads
to increased eﬃciency.

●TA-KR-V…
Custom production based on gauge head size.
Production available up to φ85mm gauge head.
●TA-02-45、TA-02-75、TA-03…
Used in combination with optional joint rod (sold separately)or SKP-HM-GS-03-60. Deep and shallow holes can be measured.
Please contact us for inquiry.

TA-KR-V

TA-KR-V

Mounting
exampleTA-02-45

TA-02-75

TA-03