AN INSTRUMENT WHICH WAS THEN BROUGHT TO ITS UTMOST PERFECTION, TO BE CALLED THE CATHOLICORGANON OR UNIVERSAL SLIDING FOOT RULE, WHICH CONSISTED OF A STOCK THAT CONTAINED AN OCTAGONAL SLIDE OF TELESCOPE AND TWO THIN SLIDES, EACH SLIDE CONTAINING A BRASS TONGUE, THAT FORM A QUADRANT, WHICH WOULD BE OF GREAT USE IN THE PRACTICE OF ARITHMETICK, GEOMETRY, MENSURATION, GAUGING, TRIGONOMETRY, NAVIGATION, DIALING, ASTRONOMY, AND ALL THE BRANCHES OF THE MATHEMATICKS, BEING AN INSTRUMENT NEVER DISED OR HADE USE OF BY ANY OTHER ORS WHATEVER, AND WOULD HE OF GR SERVICE TO MANY OF HIS MAJESTIE'S SUBJECTS WHO WERE DESIROUS OF BEING IMPROVED, CONSTRUCTED OR ASSISTED IN THE ABOVE STUDIES
Year: 1753

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SUXSPEACH, of the Parish of St. Dunstan, Stepney, in the County of Middx,
Schoolmaster, send greeting.
WHEREAS His most Excellent Majesty King George the Second,
by Letters Patent under His Great Seal of Great Britain, bearing date
at Westminster, the Nineteenth day of February, in the twenty-sixth
year of His reign, reciting that I, the said John Suxspeach, had, by my
Petition, humbly represented unto His Majesty that I had, with much
labour and expence, invented and contrived "AN INSTRUMENT WHICH WAS
THEN BROUGHT TO ITS UTMOST PERFECTION, TO BE CALLED THE CATHOLICORGANON
OR UNIVERSAL SLIDING FOOT RULE, WHICH CONSISTED OF A STOCK THAT CONTAINED
AN OCTAGONAL SLIDE OF TELESCOPE AND TWO THIN SLIDES, EACH SLIDE CONTAINING
A BRASS TONGUE, THAT FORM A QUADRANT, WHICH WOULD BE OF GREAT USE IN THE
PRACTICE OF ARITHMETICK, GEOMETRY, MENSURATION, GAUGING, TRIGONOMETRY,
NAVIGATION, DIALING, ASTRONOMY, AND ALL THE BRANCHES OF THE MATHEMATICKS,
BEING AN INSTRUMENT NEVER DISCOVERED OR HADE USE OF BY ANY OTHER PERSON OR
PERSONS WHATEVER, AND WOULD HE OF GREAT SERVICE TO MANY OF HIS MAJESTIE'S
SUBJECTS WHO WERE DESIROUS OF BEING IMPROVED, CONSTRUCTED, OR ASSISTED IN THE
ABOVE STUDIES;" His said Majesty therefore, being willing to give encourage-

page_text: ment to all arts & inventions that might be for the publick good, did, by
His said Letters Patent, give and grant unto me, the said John Suxspeach, my
executors, administrators, and assigns, His especial lycence, full power, sole
priviledge and authority, that I, the said John Suxspeach, my exors, admors,
and assigns, and such other persons as I or they should at any time agree with,
and no others, should and lawfully might make, use, exercise, and vend my
said Invention within that part of Great Britain called England, the Dominion
of Wales, and Town of Berwick-upon-Tweed, in such manner as I should
think fit, and that I, the said John Suxspeach, my exors, admors, and
assigns, should & might have and enjoy the whole profit, benefit, co-
modity, and advantage, from time to time comeing, growing, accruing, and
arising by reason of my said Invention, for and during and unto the full end
and term of fourteen years from the date of the said recited Letters Patent,
subject to a proviso therein contained, that if I, the said John Suxspeach,
did not particularly describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, by an instrument in writing
under my hand and seal, and cause the same to be inrolled in the High Court-
of Chancery within three calendar months next and immediately after the
date of the said Letters Patent, that then the same, and all liberties and
advantages thereby granted, should cease, determine, and become void, as in
and by the said recited Letters Patent (referrence being thereunto had) may
more fully and at large appear.
NOW KNOW YE, that I, the said John Suxspeach, in pursuance of the
said proviso, do hereby describe the nature of my said Invention, and do
declare that the same doth consist of the particulars, and is to be performed in
manner following (that is to say) :-
Its breadth is one inch eight tenths, depth nine tenths, which consists of a
stock that contains an octagonal slide, in the inside of which is a brass drawer
containing part of a telescope, so contrived that when the instrument is in the
case, which case is to keep the same clean, the end of the case having an
object glass, the same forms a compleat telescope about thirty inches in
length, and the end of this drawer contains a plumet used in time of observa-
tion. On each side of the instrument is a thin slide, each containing a brass
tongue that form a quadrant, in the use of which no regard is had to the
horizon, but the sun only. At one end of the octagonal slide is a brass head
containing two small slides or slips of brass; in the midst of each is a peice of
dark glass to be used in taking an observation by the sun. The case which
contains the instrument has at one end an object glass, being part of the
telescope, as before; and in the peice which contains the object glass is two

page_text: small skrews, whose use are to hold the tongues of brass together, and to keep
the slides steady in time of observation. The said instrument contains eighty-
six lines, exclusive of those on the quadrant and perpetual almanack. The
lines on the instrument are as follows:-
2. A line of equal parts or equinoctial.
8. If the diameter of a circle is 1, the side of the regular polygons
that may be inscrib'd in that circle is, &c.; and a line of
tangent rumbs.
4. If the diameter of a circle is 1, the side of the regular polygons that
may be circumscribed about that circle is, &c.
5. If the diameter of a circle is one, the side of the regular polygons
equal to the area of a circle is, &c., and a line of sine rumbs.
6. A line of artificial numbers or squares.
7. A line of artificial numbers or cube lino.
8. The solid content of the five bodies, if the side is 1, and proportion
of metals if shape and weight are the same.
9. [Globe diameter 1 inch, and tetraedron side 1 inch.
10. Octaedron and hexaedron side 1 inch..
11. Icosaedron side 1 inch.
12. Dodecaedron side 1 inch; their weight in pounds avoirdupoise of
divers metals.
On the second face of the stock mark'd B are eleven lines,
which contain, viz³ :—

page_text: Contain the principles of algebra.
The writing under the thin slides, and first of that slide mark'd
I, contain five lines, viz' :-
To find the area of a circle, the solid and superficial content of a
globe, circumference of a circle, superficial content of a cone,
side of a inscrib'd in a circle, side of a ☐ equal in area to
the area of a circle.
Superficial content of a cyllinder; area of an ellipsis; to find the
☐ of the diameter of a circle; customary way of measuring
square and round timber; proportion of cones to cylinders or
parallelopipedons; proportion of square and triangular pyramids
to cubes or parallelopipedons; cyllinder's proportion to parallel-
opipedons; and spheres to cubes and cyllinders.
Proportion of parabolic, hyperbolic, conoids, & parabolic spindles
and spheriods to cyllinders or parallelopipedons; to find the per-
pendicular of a triangle, proportion of circles, spheres, areas of
circles and parabola's area.
Contains the principle canon in trigonometry, and to find the prime,
epact in old style and new, sycle of the sun.
To find the dominical letter in both styles and Easter limit.
The writing under the other thin slide, which face is mark'd K,
contains five lines, viz' :—
o find Easter Day in both styles; the distance of the moon from
the sun; to find the day of the month of new moon, and to find
the moon's age.

page_text: 80.j
In witness whereof, I, the said John Suxspeach, have hereunto set my
hand and seal, the Twenty-ninth day of March, in the twenty-sixth
year of the reign of His said Majesty King George the Second,
and in the year of our Lord One thousand seven hundred and fifty-