Meter Marine Distance Starter Patt. No. 6605-000161
Stuart Marine Distance Meter provides a means of measuring the range of an object of known height at ranges between one quarter of a cable and up to 30 cables.
Sextant Micrometer, 10 Sec. Accuracy
( N0552-0000491) Patt. No. 6605-000177 It is used for measuring angles in any plane vertical or horizontal and is used for Coastal Navigation.