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Rangefinder
A rangefinder and station keeping instrument invented by Major F.Nolan Baker, Royal Artillery in 1905. Explanatory letter from Mrs Nolan Baker in box.
Scale: Brass. Not graduated.
Horizon glass: Adjustable in both planes by capsan screws.
Index glass: On spring-loaded swivel mount at apex of frame. Movement by cam fixed to end of index arm. Perpendicular adjustment by capsam screw. Index arm fitted with clamp.
Micrometer wheel: Operates on cam at pivot end of index arm.
Telescope: Length 8.9" (22.7 cm) closed.
In fitted mahogany box 10.0" x 9.0" x 5.0" (25.4 x 22.9 x 12.7 cm) containing shaded eyepice and tommy bar.
Scale: Brass. Not graduated.
Horizon glass: Adjustable in both planes by capsan screws.
Index glass: On spring-loaded swivel mount at apex of frame. Movement by cam fixed to end of index arm. Perpendicular adjustment by capsam screw. Index arm fitted with clamp.
Micrometer wheel: Operates on cam at pivot end of index arm.
Telescope: Length 8.9" (22.7 cm) closed.
In fitted mahogany box 10.0" x 9.0" x 5.0" (25.4 x 22.9 x 12.7 cm) containing shaded eyepice and tommy bar.
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Object Details
| ID: | NAV1085 |
|---|---|
| Type: | Rangefinder |
| Display location: | Not on display |
| Creator: | Baker, F. Nolan |
| Date made: | 1905 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 95 mm x 205 mm x 200 mm |