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Date: |
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Description: | W & S Jones// 30 Holborn London
Cross-tubular body, adjustable base graduated to 360 degrees and fitted with verier scale 0-60. Bottom has a screw which rotates the instrument in azimuth about its base.
Sights-Four vertical slit sights are cut in to tubular body.
Compass-Dia. 3" (7.6cm) set in top of instrument. Fitted wih an edge bar bar needle 2.25" (5.8cm) long, with a jewelled pivot cap at centre. A needle lifting mechanism is fitted and is operated by a stud in rim of bowl. Graduated to 8 points, quadrantally in degrees and anti-clockwise to 360 degs. Fitted with a brass lid.
AUDIT - object needs to be marked with its NAV number | Publisher: | "http://collections.rmg.co.uk/" | Subjects: | surveyors' crosses | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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