Fiducial-ray Cobalt-glass and ocular, in wooden bo

Fiducial-ray Cobalt-glass and ocular, in wooden box. (See note). Used by Sir John F.W. Herschel in his researches

Details

Category:
Optics
Object Number:
1876-567
Materials:
brass (copper, zinc alloy), cardboard, copper (alloy), cotton (fibre), glass, paper (fibre product), sealing wax, wood (unidentified)
Measurements:
fiducial glass with mount: 5 mm x 65 mm x 62 mm, ,
box: 34 mm x 115 mm x 83 mm, ,
overall weight: x x , , .085kg
credit:
Mr. J. Herschel-Shorland.
status:
Permanent collection

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