Hiltpold's Semi-Circular Slide Rule

Country of manufacture: Switzerland,            Date of manufacture: ____
Max. Width: 10.0 cm,          Max. Height: 7.5 cm,           Weight: 14.4 gms
Materials: Aluminum core plate to which are attached, front and back, white plastic printed scale sheets. A rotating printed transparent scale sheet is attached to the front;
Cursor: all plastic, three hairlines on front; one on back.
Scales: 11
Front: A [ B, C ] D, L, protractor
Back: 7 cm, K, S, T, S&T
Gauge Marks: [ C (1128), ρ'' (2063), π, ρ' (3438), C1 (3568), ρ,, (6366) ]
Condition: C3 (Very Minimal Signs of Use)
Came with: faux leather case