Aristo 10155 Soil Swell Pressure Slide Rule

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Country of manufacture: Germany,            Date of manufacture: ____
Overall length: 16.5 cm,          Width: 3.6 cm,           Weight: 23.4 gms.
Materials: All plastic, single piece
Cursor: 2.5 X 3.9 X 0.4 cms; all plastic; lines = Single hairline on front only
Scales: 12
Front: Load in PSI for different Layer Thicknesses (1, 2, 3, 4, 6, 8 feet), C (Layer Thickness), D (Vertical Rise (inches)) [ B (Swell Test Volume results) ] A1 (PI of Subgrade if Moisture, Density, and Drying are Controlled), A2 (PI of Average Wet & Rolled Subgrade), A3 (PI of Subgrade if allowed to dry out)
Back: Instructions for Use
Slide Back blank,
Well: blank, except for attribution: "Sold By: Rainhart Co., P.O. Box 4065, Austin 51, Texas"
Gauge Marks: [       ]
Condition: C3 (Very Minimal signs of use)
Came with: Original brown leather pocket slipcase. Embossed with "Soil Swell Pressure Slide Rule" on one side, and labeled on the reverse side with "compliments of National Lime Association"

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