Barometer Tube

Dial 100 mm diameter, dial scale 960 to 1060 mb (28-31 in x 0.10 in) figured in black, good quality movement mounted in a polished plastic frame 155 mm diameter with glass in anodised bezel with lug for rear mounting.

Two glass tubes 220mm long x 8mm bore one closed at the top and other open. Lower ends of two glass tubes are joined by 1 meter of pressure tubing. Both tubes mounted on sliding brackets lockable in any position on metal support rods. Polished wooden stand with graduated scale 0-100 cms, with mms in centre and figured every cm on either side. Supplied without mercury.