18 inch repeating circle
- maker:
- Edward Troughton
18 inch repeating circle, by Troughton, engraved F5TO, 3 eyepieces 3 dark glasses, 1 plumb bob, 4 brass clips, 2 brass labels with chains, instrument is exhibited on stand with 3 levelling screws, circles are divided into twelths of a degree and read to 5" arc by vernier
Details
- Category:
- Astronomy
- Object Number:
- 1909-206
- Measurements:
-
length 530 mm
width 170 mm
height 400 mm
box: length 160 mm
box: width 190 mm
box: height 60 mm
- credit:
- British Admiralty
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