Pickett Fisher Control Valve Sizing Rule (Fisher Governor Company)

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Country of manufacture: USA,            Date of manufacture: ____
Overall length: 30.8 cm,          Width: 3.2 cm,           Weight: 81.7 gms
Materials: all metal, metal end braces, adjustable
Cursor: 2.4 X 4.3 X 0.6 cms; all plastic, adjustable; lines = single hairline, front and back
Scales:
Front: Steam Valve Sizes (single ported, double ported), ΔP, D [ C, Specific Gravity, Viscosity, Liquid Flow (gpm) Q] C_V Liquid Coeff., Liquid Valve Size
Back: Inlet Pressure P₁, Corrected Inlet Pressure P_C [Pressure Drop ΔP, Sp. Gravity, Gas Temp °F, Superheat Quality °F, Gas/Steam Flow Q] C_G C_S Steam/Gas Coeff., Gas Valve Size
Condition: C4 (minimal signs of use)
Came with: Original leather case (marked: Fisher Governor Company/R. M. Newell Company/Buffaloe

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