Antique Ebony and Brass Parallel Ruler. M.K

Vintage Ebony & Brass Parallel Rule 385MM

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

3 No Vintage Architects / Navigation Ebony & Brass Parallel Rules

Vintage - SEIKOSHI Parallel Rolling Ruler With Original Box and Instructions VGC

Capt Fields Improved Parallel Ruler Rule England Vintage

Set of 2 VINTAGE RABONE BOXWOOD BRASS MOUNTED FOLDING RULERS 36" AND 24"

Vintage Blundell Harling, Navigational Protractor & Parallel Ruler 250mm