Unique Universal Model 1 Slide Rule. Half-hour instructions. Case UK made.

Vintage Blundell Harling S143-10 Slide Rule 10" Rietz Scales with Case New Rare

Lawrence Engineering vintage slide rule made in USA nice condition

Vintage mcl simplon slide rule

Vintage PIC Slide Rule Made in England Pat No 411090 Case (X4)

Lawrence Engineering vintage slide rule made in USA nice condition

Lawrence Engineering Service Wabash Indiana Wooden Slide Rule - Made in USA

Vintage Unique Log Log Pocket / Mini Slide Rule Draftsman Instrument In Box