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
Cursor: no cursor on this model?
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

---

---