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Rangefinder
Rangefinder in mahogany box
Scales: 1. Height scale on spring-loaded index arm graduated from 50-200 feet.
2. Range scale on micrometer drum graduated from 200 - 10,000 yds.
Horizon glass:Perpendicular adjustment by means of key-operated screw. Parallel adjustment by means of regulating screws
Index glass: Perpendicular adjustment by means of key operated screw.
Micrometer drum: Fitted with hinged magnifier and attached to a carriage which moves alongside index bar by means of a worm screw, operated by milled knob at front end of instrument.
In fitted mahogany box with brass carring handles 12.6" x 6.7" x 6.4" (32.0 x 17.1 x 16.2 cm) containing spare spring, mirror adjusting key, and directions for use.
Scales: 1. Height scale on spring-loaded index arm graduated from 50-200 feet.
2. Range scale on micrometer drum graduated from 200 - 10,000 yds.
Horizon glass:Perpendicular adjustment by means of key-operated screw. Parallel adjustment by means of regulating screws
Index glass: Perpendicular adjustment by means of key operated screw.
Micrometer drum: Fitted with hinged magnifier and attached to a carriage which moves alongside index bar by means of a worm screw, operated by milled knob at front end of instrument.
In fitted mahogany box with brass carring handles 12.6" x 6.7" x 6.4" (32.0 x 17.1 x 16.2 cm) containing spare spring, mirror adjusting key, and directions for use.
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Object Details
| ID: | NAV1089 |
|---|---|
| Type: | Rangefinder |
| Display location: | Not on display |
| Creator: | Keuffel & Esser Co |
| Date made: | 1917 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 133 mm x 273 mm x 125 mm |
| Parts: | Rangefinder |