U. S. Army Model M1 Slide Rule, for Solution of Triangles

---

Country of manufacture: USA,            Date of manufacture: ____
Diameter: 32.0 cm,      Weight: 141 gms
Materials: plastic
Cursors: two on front side, independent
Scales: 4
Front: D (1/sin), E, B (1/cos), C (tan, cot), Instructions for Solution of Right Triangles
Back: Instructions for Solution of Oblique Triangles, workspaces for problemsa
Condition: C2 (Mint but without one or more extras)
Came with: Original olive drab cloth case

---

  

---