A brass surveying compass by A.G. Thornton, Manchester, with silvered dial and folding sights on the pierced limb 12½ins. (31.8cm.) long; an azimuth circle in mahogany case; a P-type compass and a barrel micrometer in mahogany case. (4)

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A brass surveying compass by A.G. Thornton, Manchester, with silvered dial and folding sights on the pierced limb 12½ins. (31.8cm.) long; an azimuth circle in mahogany case; a P-type compass and a barrel micrometer in mahogany case. (4)

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