Weems & Plath Nautical Slide Rule

Item Number: 105.

The Nautical Slide Rule is sometimes referred to as a Time Speed Distance Calculator.

It allows the user to compute distance in yards if the speed is factored in knots.


  • Immediate solution to all speed-time-distance problems
  • Equally applicable for nautical or statute miles
  • Speed in knots or mph time in hours, minutes or seconds distance in nautical or statute miles, or yards if speed is in knots


  • Length: 7.25 in (18.42 cm)
  • Width: 7.25 in (18.42 cm)
  • Height: 0.09 in (0.23 cm)
  • Weight: 0.3 lb (0.23 cm)
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