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Auctioneers Dr. Crott 90th Auction

391 390 394 392 393 393 392 391 390 Swiss, 320 x 160 x 230 mm, circa 1830 A rare machine for gear cutting, used for the production of movements Case: brass, steel and iron. to be sold without reserve 瑞士 — 罕見的切割機蕊齒輪儀器 to be sold without reserve 39272 C: 2 1.500 - 2.000 EUR 1.900 - 2.500 USD 15.000 - 20.000 HKD Swiss, Height 235 mm, circa 1880 Bracket lathe used for stone setting Case: brass, steel and iron, wooden base. to be sold without reserve 瑞士 — 制定珠寶鑽石的車床 to be sold without reserve 39271 C: 2, 23 800 - 1.200 EUR 1.000 - 1.500 USD 8.000 - 12.000 HKD Swiss, Height 180 mm, circa 1830 A rare machine for cutting verge wheels Case: brass, steel and iron. to be sold without reserve 瑞士 — 罕見的切割軸輪工具 to be sold without reserve 39274 C: 2, 23 1.000 - 1.500 EUR 1.300 - 1.900 USD 10.000 - 15.000 HKD Elliott, Holborn, London, Length 325 mm, circa 1840 A rare proportional calliper used for enlarging or reducing three- dimensional measurements - with original box Case: steel, partly nickel plated. Divided in nine proportional units for enlarging or reducing measurements. William Elliott (1804-1849) was in business at High Holborn, London, from 1830 to 1849. Elliott, Holborn 倫敦 — 罕見的調整比例測量儀,有放大縮小距離 的功能,附原盒 39076 C: 2, 10 550 - 700 EUR 700 - 900 USD 5.500 - 7.000 HKD

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