Simplon Primary Log Log

---

Country of manufacture: England,            Date of manufacture: ____
Overall length: 32.7 cm,          Width: 3.5 cm,           Weight: 60.8 gms
Materials: plastic laminate over wood; closed form simplex
Cursor: 3.2 X 4.1 X 0.5 cm; all plastic;        lines: one
Scales: 7, extensions on A, B, C, CI, D
Front: LU, A [ B, CI, C ] D, LL
Back: Physical Properties of Materials, Mensuration Formulae, Mathematical and Physical Constants, Conversion Factors
Slide Back: blank
Gauge Marks: [ π, M (3183), C (1128), C1 (3568), 786 ]
Condition: C5 (Normal signs of use)
Came with: Orig. black cardboard box/case

---

---