drawing tool View basket “Vintage British Thornton Draughtsman’s Adjustable Triangle QA 21B” has been added to your basket. Showing the single result Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Showing products 1 - 1 of 1. Products per page 102550100All Vintage British Thornton Draughtsman’s Adjustable Triangle QA 21B £12.50 Add to basket