Bacharach 13-7019 MZF High Sensitivity Draft Gauge +0.05 to 0 to 0.25" WC
The highly sensitive MZF Draft Gauge requires no liquid or tedious leveling; this dry type instrument is always ready for immediate use. The pointer's movement over scale is in direct proportion to the magnitude of the draft at the test point. Ideal for residential, commercial and industrial heating plants; to measure furnace draft and pressure drop across air filters.
Supplied with a 5-inch draft tube and 9’ of rubber tubing.