A Catalogue of Instruments, 









£• 



s. 



d. 



Ditto in the Ptolemaic or common manner — 



6 



6 



0 



Ditto, 12. inches in diameter, mounted in the belt manner, from 5I. 



5s. to 6 



16 



6 



Ditto in the common manner — — 



3 



3 



0 



An armillary dialling- fphere ■ — . • — 



40 



0 



0 



Manual orreries, from ll. is. to — « — 



3 



13 



6 



Planetarium, teliunan, and lunanum, from ibl. i&s. to — 



3 1 



10 



0 



Adams's improved equatorial dial, or portable obfervatory, 



from 







7I. 17s. 6d. to — • 



3 1 



10 



0 



Horizontal fun dials, from 5s. to — - — - 



12 



1 2 



0 



Univerfal ring dials, from 7s. 6d. to — 



3. 



J 



0 



Tranfit irrftruirients 









AftronomicaL quadrants, from 50I. to — — 



800 



O 



0 



Mathematical and Surveying Infiruments. 







Gafes of drawing inftruments, from 7s. 6d. to — 



35 



O 



0 



Neat magazine cafes of inftruments — — 



11 



II 



0 



Elliptical compalfes — — 1 — - 





4 



0 



Beam compalfes with divifions, &x. 









Triangular compalfes of a new contraction 









Adams's fectoral, elliptical,, and callipper compafles in one inftrument,: 







from 4I. 14s. 6d. to — — — . 



9 



Q 





Adams's protracting parallel rules, and univerfal plotting fcale 









Protractors, feftors, fcales, parallel rules, &c. 









A new infttument for taking perfpective views, &c. — 



12 



12 



0 



A ditto for afcertaining points — — 



2 



12 



6 



Another inftrument for taking views — 



5 



,5 



0 



Pantographer, from 2l. 2s. to . — 



6 



6 



0 



Plain tables, from 3I. 13s. 6d. to — 



14. 





0; 



Theodolites, from 41. 4s. to — - — 



3 1 



10 



0 



A neat portable theodolite — — — 



8 



18 



6 



Adams's improved double theodolite, exceeding, for accuracy and utility, 







every former kind, from 1 2I. 1 2s. to — — 



3i 



10. 



Q. 



Meafuring wheels, from 61. 6s. to — — 



to. 



10 



O 



Circumferenter, from 2I. 2s. to — — 



15 



15 



O . 



4 T 2 PhilofophicaL 



