M W Kellogg Hydraulic Slide Rule

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Country of manufacture: USA,            Date of manufacture: ____
Overall length: 28.0 cm,          Width: 4.2 cm,           Weight: 108.6 gms
Materials: all plastic, adjustable
Cursor: no cursor on this example
Scales: 19, specialized
Front: A, B [ Vapors: D-1, D-2, Density-Velocity, Z, F-2, Density-ΔP, F-1 ] H
Slide Back: Liquids: C-2, C-1, E-2, sp. gr @60°F, Expansion Factor-ΔP, Z/S, Expansion Factor Velocity, E-1
Back: Instructions for use
Condition: C3-C4 (Very minimal to minimal signs of use)
Came with: Nothing

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