FEET OF HOSE

[dho]

I have a analog gage (having LO and Hi p ports) made by DWYER inst inc. MAGNEHELIC, 12-193048-02. the measurement unit is "FEET OF HOSE". anyone knows this unit? contacted DWYER with no answer.
thanks.

 

[IRstuff]

As described, it sounds like it's a pressure gauge, so worst-case, you can apply known pressures and come up with a conversion factor.

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[dho]

thanks IRstuff.
DWYER finally replied. it was a customer gauge. 250 "FEET OF HOSE" is about 6.8" W.C.