Unique Pioneer Long Scale Slide Rule

---

Country of manufacture: England,            Date of manufacture: ____
Overall length: 36.6 cm,          Width: 8.4 cm,           Weight: 214.4 gms
Materials: printed paper scales laminated onto boxwood body and slide
Cursor: 5.0 X 9.3 X 0.6 cms; plastic runners holding plastic lens; lines = five lines, front only
Scales: 14
Front: K, L, P, PA [ B, PB, 10, 12.5, 16, C ] D, 16, 12.5, 10
Well: unknown settings
Back: Interpolation factors or settings?
Slide Back: blank
Gauge Marks: [ π ]
Condition: C2-C3 (Mint to Very mininal signs of use)
Came with: Original dark green cardboard box/case

---

---