DAYCO DAYCOLOG II A-3375 V-belt Drive Fatigue Analyzer

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Country of manufacture: US            Date of manufacture: 1967?
Diameter: 20.0 cm,          Weight: 62.5 gms
Materials: Rotating disks all plastic, backing is plastic coated cardboard, 2 sided;           Cursor: all plastic, single line
Scales:__
Front:
Back: Instructions for use
Gauge Marks: [      ]
Condition: C1 (Mint Condition but all extras not necessarily mint)
Came with: Printed instruction booklet which serves as folder for holding the rule

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