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Davis Time-Speed-Distance Computer

• Type: Circular
• Size: 6 Inches
• Material: Plastic
• Scales:
  • Front: Distance-Speed / Time

A specialized trip computer. Slide circle set flush. Set the slide index to your current speed, read distance traveled against time traveled. Index at "60" following theory that 60 units per hour equals 1 unit per minute. Multiplication may be accomplished using "10" as the index. Incorporates unit conversions on Distance-speed wheel on body. Instructions on reverse. Eyelet for lanyard. Gift of Tony Young.