. 20th century catalogue of supplies for watchmakers, jewelers and kindred trades. ¢ ⢠⢠⢠â Collar and ( lamp Nut of Lacquered Brass, bteel Gimlet Screw â¢.⢠⢠^â â¢^ A convenient device with suitably hinged collar .^°d grmletscrew for fastening to tree, post or window frame =^A^ =relieve the fatigue of the arm during protracted observationswith the larger portable telescopes. 480. CoUa 481 483, No. 476. of Object Glass. 10 Ligne 13 ⢠14 16 19 ACHROnATIC TELESCOPES. Finely finished Brass Telescope, extra qualityrocco covered Body, with cap to cover Objectand Dust-proof Shutter to
. 20th century catalogue of supplies for watchmakers, jewelers and kindred trades. ¢ ⢠⢠⢠â Collar and ( lamp Nut of Lacquered Brass, bteel Gimlet Screw â¢.⢠⢠^â â¢^ A convenient device with suitably hinged collar .^°d grmletscrew for fastening to tree, post or window frame =^A^ =relieve the fatigue of the arm during protracted observationswith the larger portable telescopes. 480. CoUa 481 483, No. 476. of Object Glass. 10 Ligne 13 ⢠14 16 19 ACHROnATIC TELESCOPES. Finely finished Brass Telescope, extra qualityrocco covered Body, with cap to cover Objectand Dust-proof Shutter to Eye Piece. Magni- Length Length fying Closed, Open. Power. ; 5Vi inches I434: inches 10 times 6 16?S 14 â 7 â < 18 â â 16 HU 24-4: 20 934: 29 36 10,4 â ⢠35 â¢â¢ 3o NON=ACHROMATIC TELESCOPES. Mo-Glass EACH. $,604, No. 477. 1 Draw BrassTelescopes, ColoredEnameled Body,Doz $ 2 Draw Brass Telescopes, Colored Enameled Body. 477. 3 Draw Brass Telescopes, Colored Enameled Body. 477. 4 Draw Brass Telescopes, Colored Enameled SHIP TELESCOPES. Large Ship Telescope, Corded Body, Burnished Brass Tubes, and ends pro-vided with Sliding Shutters to keep out the dust. MagnifyingPower. Size of Objtct Glass, 16 Lgnes Length LengthClosed. inches 23;^ inches No. 47S) Same as above with 2 Draw Tubes e EACH. $ BARDOUS ASTRONOmCALTELESCOPES. No. 484. Finely finished Baass Astro-nomical Telescopes, on high WoodTripod, with Wood Thumb Screwfor adjusting height of of Telescope closed, 38 are so constructed that theinstrument can be swayed in anydirection. Has two Eye Pieces, acelestial power, 110 times, and a ter-restrial power, 55 times; size of Ob-ject Glass, 33 lignes (about 3 inches),each raved Dav and Night on tube. each Noneof the above Telescoues can be sent out on selection,returned. * Telescopes be No. 22 Lignes. For Watchmakers, Jewelers and Kindred Trades. 747
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Keywords: ., bookcentury1800, bookdecade1890, bookid20thcenturyc, bookyear1899
