Vintage Small Wooden Ruler Crosby Steam Gage & Co ? To The Inch

Vintage No 4 Small Wooden Ruler Elliott Bros London 20 To The Inch

Vintage "Mathema" Boxed Nautical Captain Fields Parallel Ruler 15inch (38cm).

J Halden & Co Manchester London Vintage Wood Engineers Rule Ruler Engine Divided

Vintage BRL Students Slide Ruler, 10 Inch, 3 Part, Engineers, In Original Box

Vintage COOKE, TROUGHTON,& SIMMS LTD - Small Triangular Wooden Ruler

Vintage A.W.FABER "Castell" Wooden Ruler 1/87 Syst. Rietz

Vintage Wooden Engineer Ruler Scale Rule Brough Engineer & Surveyor Derby Pair