B. F. Grizzle Water Line Capacity Slide Rule

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Country of manufacture: USA (manufacturer unknown),            Date of manufacture: ____
Overall length: 20.4 cm,          Width: 5.1 cm,           Weight: 50.0 gms
Materials: all plastic
Cursor: 3.8 X 6.6 X 0.6 cms; all plastic; lines = one on front
Scales: 9, specialized
Front: Nominal Pipe Size, Inside Dia in inches [ length of line in feet, cubic feet per second, gallons per 24 hours, gallons per minute ] coefficient of roughness, loss of head in feet, pressure loss lbs per sq inch
Back: blank [ Instructions for Use ] blank
Condition: C5 (signs of normal use)
Came with: faux-leather pocket slip case

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