Richardson Pantocrat, Ex. 2

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Country of manufacture: USA,            Date of manufacture: btw. 1912-1920
Overall length: 27.7 cm,          Width: 4.3 cm,           Weight: 275.0 gms (body & all four slides)
Materials: stainless steel body, stainless steel slides with celluloid facing.
Cursor: two, each 3.1 X 4.5 X 0.8 cm; celluloid, front side only;     Lines: one
Scales: no extensions
Front: K, SIN, A [ see below ] D, TAN, LOG
Back: Instructions for Use
Slide 1 (1776): Problem Keys [ B, CI, C ] Problem Keys
Slide 2 (1812): Problem Key Index Lines [ B, L, C ] Problem Key Index Lines
Slide 3 (1860 LL): C, LL¹, LL², LL³
Slide 4 (1865 O): C, CI, R
Gauge Marks: [ π, C, e, 785, c (2154), c² (4642) ]
Condition: C5 (signs of normal use)
Came with: Original leather case with snap closures

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Slide 1 (1776):

Slide 2 (1812):

Slide 3 (1860 LL)

Slide 4 (1865 O)

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