IWA 05136 Fisher Governor Company Control Valve Sizing Slide Rule Mark VIE

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Country of manufacture: Germany,            Date of manufacture: ____
Overall length: 28.1 cm,          Width: 4.0 cm,           Weight: 53.7 gms.
Materials: All plastic body
Cursor: 4.0 X 4.8 X 0.9 cms; All plastic, slightly magnifying,   lines: single hairline, front and back
Scales: 17
Front: ΔP (Pressure Drop), %Q_C2 [P₁ (Inlet Pressure), gas specific gravity, Temp °C, Superheat °C, C₁, Gas Q, Steam Q ] C_g (Gas) or C_s (Steam), %Q_C1
Back: ΔP (Liquid Pressure Drop), %Q_C2 [P₁ (Inlet Pressure), Inlet Density (gas or vapor) or Specific Gravity (liquid), Q (Liquid, or Gas/Vapor flow) ] C_v (Liquid), C_g (Gas or Vapor)
Condition: C2 (Mint, no instructions)
Came with: Original leather case, marked 'Fisher E'

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