Draft-Rite Draught Gauge
code: LVSAV1993.030
Description
Draft-rite draught gauge in leather pouch within cardboard box, c. 1940, from Pumpherston Oil Refinery laboratory.
Hand-held instrument by Bacharach, Pittsberg PA used to detect leaks in boiler flues by displaying the reduced air pressure on a dial calibrated from 1 to 5 "tenths inch of water".