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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
* Material: Polystone resin (heavy
22" Strap Drop
No cracks or structural damage observed
The underside bears the crown-over-B shield mark used in the late 19th to early 20th century
nursery decor
Vintage Keuffel & Esser K&E Pocket Slide Rule No. 4053-3 w Leather Case Color:cream * Material: Polystone resin (heavyVintage Keuffel & Esser K&E Pocket Slide Rule No. 4053 3 w Leather Case Vintage Keuffel & Esser Co. pocket slide rule model 4053 3 with original brown leather carrying case. Features multiple engineering and mathematical scales, including logarithmic and trigonometric functions. Marked Keuffel & Esser Co. N. Y., Made in U. S. A., and Pat. June 5, 1900. A classic scientific calculating instrument used by engineers, architects, surveyors, and students
