Station keeper - Wharton's form, ebony, box 7" lon

Station keeper - Wharton's form, ebony, box 7" long tapering from 2 1/4" to 3 1/2", 1" thick, one mirror is fixed and the other is moved by means of an index (brass) from 0 degree to 20 degrees subdivided to 1/2 degree by vernier reading to 10'. Sight hole at one end, open at the other

Details

Category:
Navigation
Object Number:
1911-173
credit:
Admiralty Hydrographic Department
status:
Permanent collection

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