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'day and night' refracting telescope, micrometer adapted for use with Rand's micrometer, by Jesse Ramsden, London, England, c. 1800. Brass tube and table tripod, 1 3/4-inch object glass, one eyepiece with sun filter and micrometer eyepiece, fitted in mahogany box, with key, diameter for main tube 1 7/8-inch length 1-foot 5-inch, screw adjustable for altitude of focussing. No lens cap
Details
- Category:
- Optics
- Object Number:
- 1911-252
- Materials:
- copper (alloy), glass, ivory, mahogany (wood) and textile
- Measurements:
-
telescope and eyepiece: 510 mm x 530 mm x 260 mm, , 2.41kg
box: 90 mm x 500 mm x 135 mm, , 1.195kg
- type:
- telescope - refracting
- taxonomy:
-
- furnishing and equipment
- tools & equipment
- optical instrument
- telescope
- furnishing and equipment
- tools & equipment
- optical instrument
- telescope
- credit:
- J.C. Stevens (Auction Sales)
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Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
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