Constant Volume Air Thermometer

Consists of a polished teakwood stand approx. 750mm high fitted with a wooden scale reading from 0 to 60cm x 1mm & supporting an adjustable mercury reservoir by a metal rod. A detachable air thermometer bulb about 70mm diameter connected via three-way stopcock to mercury tube with zero index fused inside its upper end. A metal vessel surrounding the bulb supported by detachable metal shelf mounted on insulated asbestos screen. Mounted on a teakwood stand with a deep tray, which serves to catch any mercury spilled accidentally from the reservoir. Supplied complete with 1 meter of rubber pressure tubing 10mm outer diameter & 5mm bore for connecting the reservoir to the bulb.