A grouping of a vintage Welch Mdf slide rule educational prop, two Keuffel & Esser Co. slide rules with cases, a Sterling decimal tri log-log slide rule no. 594 with case and instruction manual, a Frederick Post Co. no. 1452 slide rule with case, a Frederick Post Co. slide rule with case, and a Charles Bruning Co. plastic slide rule with Dietzgen case.
|Materials:||Plastic, Wood, Glass, Mdf, Metal|
|Brand:||Welch, Keuffel & Esser Co., Sterling, The Frederick Post Co., Charles Bruning Co.|
|Number of Items:||7|
- to fair. Surface scratches near edges of educational prop; minor wear to leather cases; scratches and finish loss on metal window of Keuffel & Esser Co. slide rule; writing present on Dietzgen case.
- measurements of educational prop only.