Treatise on the principal mathematical instruments employed in surveying, levelling, and astronomy : explaining their construction, adjustments, and use. With an appendix, and tables / By Frederick Walter Simms.

  • Frederick Walter Simms
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: Treatise on the principal mathematical instruments employed in surveying, levelling, and astronomy : explaining their construction, adjustments, and use. With an appendix, and tables / By Frederick Walter Simms. Source: Wellcome Collection.

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    Semicircular plain Protractors ‘ 3 ‘from 16s. to Ivory Protractors : : : , from 6s. to Ditto, upon Parallel Rollers : : from 18s. to Eighteen-inch best Brass Pentagraph Two-feet ditto : ‘ : : : Two-and-a-half-feet ditto ‘ : ; ‘ . Three-feet ditto . ; ‘ ; Three-and-a-half-feet ditto. ; . Trochiameter, for counting the Tetonitiias of a Carriage- teed Leather Case with Strap for ditto Plain Perambulators (Wood) Ditto, Brass-mounted Best ditto, with Metallic Wheel Common twelve-feet Levelling-Staff Best ditto ‘ Troughton’s Improved Portable ditto, saith Bevel: Sopwith’s ditto, for Reading without an Assistant Ditto, stronger, with painted divisions Gravatt’s Levelling Staff Tape Measure, 25 feet, links Ditto, ditto, decimals Ditto, 33 feet, links Ditto, ditto, decimals Ditto, 50 feet, links P P Ditto, ditto, decimals . ‘ ] j Ditto, 66 feet, links Ditto, ditto, decimals Ditto, 100 feet, links Ditto, ditto, decimals ‘ ‘ Land Chains, 50 feet, and sash ; : * : Ditto, 100 feet, and ditto from 11. 3s. 6d. to Ditto, 66 feet, with two Round Rings ssaip stan each link and Arrows Ditto, ditto, with three eskd Rings, &c. Ditto, ditto, with two Oval Rings, &c. | Ditto, ditto, with three Oval Rings, &c. — Standard Chain, 50 feet . : i 4l. 4s. and Diito, 66 feet ; : ; F 52. 5s. and Ditto, 100 feet : é 82. 8s. and ( Stronger Chained: SG. stele to Order.) COND ANANTH ON &H el cel > b wo Neo = = mm Co oto OC SO. a a oS OS SS Se SS °.S> th = S&S. Oo 2 wa oo. bos aAoOonr emma n SspeaePoemeeeadcoorsssosso es cococcoococoocco$s oO nooo a