Vintage - Parallel Rolling Ruler - W H Harling of London- Draughtsman's Ruler

VINTAGE 30CB UNIQUE ADJUSTABLE TRIANGLE RULE RULER MEASURE

Blundell Harling 12" Vintage True-Angle Adjustable Set Square W/Box Used In VGC

Vintage Blundell Harling, Navigational Protractor & Parallel Ruler 250mm

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

Blundell Harling 10" Slide Rule England w/ Case + W H Smith Instruction Book

Vintage Blundell Harling Arcliner Compass with Stencil Case and Manual England

Vintage Blundell Harling Academy “A” 3-sided Drafting Ruler