A lacquered brass circumferentor signed Bleuer London , divided 10-360°, with four folding sighting vanes, the staff mount with ball and socket joint - 5¾in.(14.7cm.)diam.; an enclosed surveyors cross signed on the silvered dial W.& S. Jones Holborn London , the circle divided 10°-360°, with vernier scale, the body tube with cross sights, the compass with edge bar needle - 3¼in(8cm.)wide; and an English Artillary quadrant, with divided scale 0°-90°, with bubble level - 17¾in.(45cm)wide (3)
A lacquered brass circumferentor signed Bleuer London , divided 10-360°, with four folding sighting vanes, the staff mount with ball and socket joint - 5¾in.(14.7cm.)diam.; an enclosed surveyors cross signed on the silvered dial W.& S. Jones Holborn London , the circle divided 10°-360°, with vernier scale, the body tube with cross sights, the compass with edge bar needle - 3¼in(8cm.)wide; and an English Artillary quadrant, with divided scale 0°-90°, with bubble level - 17¾in.(45cm)wide (3)
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