Consists of a polished teakwood stand approx. 750 mm height.
A reservoir bulb sliding on vertical clamping rod. A detachable
air thermometer bulb 70 mm dia connected via 3 way stop cock
to u tube with wide bore left hand limb graduated 0.60 x 0.2
ml and sliding indicator on right hand limb to obtain level.
Base of U tube connected by rubber tubing to reservoir bulb.
A metal vessel surrounding the bulb supported by a detachable
metal shelf mounted on insulating asbestos screen mounted
on the stand with a deep tray, supplied complete with one
meter rubber pressure tuning for connecting the reservoir
to the tube. (About 750 gm of mercury is required) with out