Thornton 0552/1448 Speed-Time-Distance Nautical Slide Rule
Country of manufacture: England, Date of manufacture: ____
Overall length: 35.9 cm, Width: 5.1 cm, Weight: 108.1 gms
Materials: all plastic
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Scales: 5
Front: Seconds-Minutes or D Longitude [ Sea Miles (Distance) or Knots (Speed) or Dep. 0.1-40, 5-2000 ] Hours-Days
Back: instructions [ Lattitude 80°-0° ] instructions
Gauge Marks: [ ]
Condition: C5 (Signs of Normal use)
Came with: Original black plastic and cardboard case