Capt Fields Improved Parallel Ruler Rule England Vintage

EBONY & BRASS 21" PARALLEL RULE - VINTAGE TOOL

Cooke Troughton & Simms Engineering Slide Rule Vintage Collectable

Vintage Rolling / Parallel 18 inch Rule

Vintage - Boxwood - Capt Field's Improved - Parallel Rule - Aston Manda - 1944

J Halden Manchester London Vintage Wood Rule Ruler Engine Divided Links 500 Feet

Vintage 1963 London Parallel Rule Ebony & Brass Draughtsman Tool

Vintage 50s London Parallel Rule Ebony & Brass Draughtsman Tool 38cm