box: 262 mm square, height 170 mm; diameter of bowl 170 mm]]> an outer scale 0° - 360° in steps of 1° clockwise an adjoined scale 360° - 0° in steps of 0.5° anticlockwise an inner non-uniform scale - the sector has the same scale in 4 octants
with 0 at 45° and 315° positions with labeling 'shadow' near 0 marks. The S sector has 4 octants marked 0-10-0-10-0 starting at E with 0 at 90°, 180°, 270° points and 10 at 135° and 225° positions - divisions slightly closer nearer 10.]]> 175mm x 180mm x 65mm]]> overall height 228 mm; base width 230 mm; depth 180 mm]]> box 353mm x 30mm 10mm]]> box 360mm x 32mm x 17mm]]> diameter of compass itself 110 mm]]> base diameter: smaller 75 mm; larger 82 mm; height (each) 90 mm]]> internal diameter 80 mm; external diameter 105 mm; overall length 305 mm]]> Visitors' Centre caption "Late eighteenth-century mechanical demonstration from Professor Copland's cabinet, showing a cube with handles balancing beyond its edge with support under the centre of gravity of the whole shape".]]> cube side 60 mm; stand height 185 mm; handle length 170 mm; width 35 mm]]>