A double-sided instrument for calculations relating to the flow of all gases. It has two pressure loss scales, one dealing with the majority of problems where the terminal pressure is substantially atmospheric and the other for pipes at pressures up to 275 bar. Handles all fuel gases, air, nitrogen, carbon dioxide, etc., and is widely used for sizing factory compressed air and fuel gas systems, pipelines in chemical works, coke ovens and process plants.

Scale Ranges: diameter 10 to 1500 mm.
Flow 1.1 to 400,000 m ³ /h.
Length 3 to 1,000,000 m.
Velocity Scales for high and low pressure on reverse.
Size: 7.5/8" diameter.