Stanley London Parallel Rule,

Stamped Stanley London trade mark measures 18″ long by 2 1/2″ wide, the rollers move with ease and the body I think made from Bakelite? the box I think original is without hinges but has the fastening clasps, on inside of box lid is a stamp that says “King Alfred”  a nice collectible piece.

Price is Inclusive of postage to mainland U.K.