Mear Gas Flow Calculator for Cast Iron or Steel Pipes, Model GM4 - Metric

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Country of manufacture: England,            Date of manufacture: ____
Diameter: 19.5 cm,      Weight: 159.3 gms
Materials: all plastic
Scales: numerous, specialty
Front
     Outer Disk: Pressure Loss, Pressure Loss, Flow rate
     Inner Disk: Bore of Pipe, Length of Pipe, Table: Bores of various steel pipes
     Cursor: Pressure Loss Indicator, Average Line Pressure, Sp.Gr. Cast Iron Pipes, Sp. Gr. Steel Pipes, Instructions
Back
     Outer Disk: Flow Rate, Velocity
     Inner Disk: Bore of Pipe, Gauge Pressure in Pipe, Instructions
Condition: C2 (Mint but no manual)
Came with: Blue plastic slipcase w/snap closure

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