A C a t a l o g u e o f I n s t r u m e n t s .
Telefcopes of various lengths, fizes, and prices
Telefcopes tornfe at féa by night ' ; — — j
Acromatic profpeCts, from 15s. to — — 2
Acromatic telefcopes, with brafs drawers, which may be drawn out at
once,.and that finit up, conveniently for the pocket, from i l .n s . 6d. to 13
An optical vade mecum, or portable acromatic telefcope and microfcope,
&c. for tranfparent ancfopake objeCifs, &c. from 3I. 13s. 6d. to 1 4
A thirty inch;acromatic telefcope; with different ey&pieces* for terreftriali
and celeftial objeCts, from 81. 8s. to — — n
Ditto with rack work
An acromatic telefcope, about three feet and\an-- half, long* with different
eye-pièces — — ——
Reflecting telefcopes of all the various fizes,
A three foot.reflecting telefcope, with four magnifying powers
A ditto with rack work — — 36
A two foot reflecting telefcope, with rack work,, and four magnifying
powers — — — v- -21
A two foot reSeCting-telefcope, with two magnifying powers- - rsr
An eighteen inch ditto ■ — __
A twelve inch ditto — — _
Double reflecting microfcopes, from 3I7 13s. 6d. to . ----- :
Ellis’s aquatic microfcope — _
Wilfon’s microfcope, improved' — ■ ' .— .
Adams’s lucernal microfcope for opake and tranfparent objeCts, being the
moft' perfeCt infiniment of- the kind hitherto contrived, affording more
entertainment and inftruCtion than any other inftrument - —
Solar microfcopes — . —
Ditto for opake objeCts —- — _...
Ditto ' —
Gamera obfcuras, from 8s. 6d. to - — . —, |
Glafs prifms, from ys. 6d. to, —% — —
Magic lanthbms — — —
s. dil
l 6*
12 6
13 .0.
14 6
11 a.
18 a.
15 a,
o o.s
1 2 CTi
8 o
5 o
o o
2 O
12 6
O O '
5 0
16 a
o o-
7: ^
2 O’
5 »
o a.
Ditto j
A C a t a l o g u e o f I n s t r u m e n t s .
£■
Ditto in the Ptolemaic of common manner. , — 6
Ditto, 12 inches in diameter, mounted in-the heft-manner, from 5I. 5s. to 6
Ditto in the common manner • — . — 3
An armillary dialling fphere. — — 40
7 23
s . d.
6 o
16 6
3 o
Manual orreries,-from ll. is. to —■ —
Planetarium, telluriaii, and lunarium, from 181. 18s.* to — 31
Adams’s improved equatorial dial, or portable obfervatory, from
71.17s. 6d. to -- t ' ' — 31
Horizontal fun dials, from, 5s. toi ' — —.. 12
Univerfal ring dials,. from 7s. 6d. to .. —. 3
Tranfit inftruments
Aftronomical quadrants,-.from 50b to — — 800
3 »3
Mathematical and Surveying Inftruments..
35.
Cafes of drawing, inftruments, from 7s. 6d. to. —
Neat magazine cafes of,inftruments — —
Elliptical, compafles — ■ —• -
Beam compafles with divifions,, &c.
Triangular compaflesof a new conflxuCtion
Adams’s feCtoral, elliptical, and callipper compafles in one inftruments
>. from 4I. 14s« 6d. to - — —
Adams’s protraCting parallel rules, and univerfal plotting fcale.
ProtraCtors, feCtors, fcales, parallel rules, &c.
A new inftrument for taking per fpeCtive. views,.. &c. —
A ditto for afcertaining points — —
Another inftrument for taking views —
Bantographer, from 2l. 2s. to ----- —
Plain tables, from 31.13s..6d. to,' — —
Theodolites, from 41.4s. to - —
A neat portable theodolite — —
Adams’s improved double theodolite, exceeding, for accuracy'* and utility,
every .former kind, from 12I. 12s. to ' — —
Meafuring wheels, from 61. 6s. to . — —-
Circumferenter, from 2b :2s. to — E( — -
9 9, ©
12.. 12 O :
2 12 6
5 - 5 . 0.
. '6: 6 0
14 M ' 0
31 i ,10 1 9,
8 18. 6..
34 10 a.
id- 10 0
»S' J5> 0.
, T; 2 ; Philofophicah