Level
Telescope-14.9" (38cm) long, O.G. dia. 1.9" (4.8cm). Inverting (cross wires missing). Milled knob on main tube for focussing at O.G. end. A spirit level in brass casing 8.25" (21cm) long is attached to underside of telescope by two broad copper bands.
Stand-The telescope is mounted on a stand 11.5" (29.2cm) long by two "Y" mounts (one with securing pin missing), one of which is fitted with a capstan headed levelling screw. A tripod socket head, fitted with four levelling screws and a horizontally mounted slow motion screw for movement in azimuth, is attached to a spigot at centre of underside of stand.
Compass-Dia. 4.25" (10.8cm) mounted in centre of stand. Fitted with a steel edge bar needle, pointed at each end, 2.75" (7cm) long, with a jewelled pivot cap at centre. Graduated to 8 points, quadrantally in degrees, and anti-clockwise to 360 degs. Fitted with a needle lifting mechanism operated by a knob on verge ring of bowl.
Stand-The telescope is mounted on a stand 11.5" (29.2cm) long by two "Y" mounts (one with securing pin missing), one of which is fitted with a capstan headed levelling screw. A tripod socket head, fitted with four levelling screws and a horizontally mounted slow motion screw for movement in azimuth, is attached to a spigot at centre of underside of stand.
Compass-Dia. 4.25" (10.8cm) mounted in centre of stand. Fitted with a steel edge bar needle, pointed at each end, 2.75" (7cm) long, with a jewelled pivot cap at centre. Graduated to 8 points, quadrantally in degrees, and anti-clockwise to 360 degs. Fitted with a needle lifting mechanism operated by a knob on verge ring of bowl.
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Object Details
ID: | NAV1438 |
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Type: | Level |
Display location: | Not on display |
Creator: | Henry Barrow & Co |
Date made: | circa 1850 |
Credit: | National Maritime Museum, Greenwich, London |
Measurements: | Overall: 220 mm x 410 mm x 115 mm |
Parts: | Level |