Ricoh 150, Engineering Rule

---

Country of manufacture: Japan,            Date of manufacture: ____
Overall length: 31.9 cm,          Width: 4.1 cm,           Weight: 104.9 gms
Materials: Celluloid Laminate over bamboo, metal end braces, adjustable
Cursor: 3.0 X 5.2 X 1.0 cms; all plastic, adjustable; lines = single line, front and back
Scales: 21, no extensions
Front: L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back: LL0, LL00, A [ B, K, CI, C ] D, S, ST, T
Gauge Marks: [ π, e, C, ρ^o ]
Condition: C4 (minimal signs of use)
Came with: Original brown leather case

---

---