It's a vintage wooden folden rule by Biffar Haustür Studio.
Biffar has been serving their customers since 1950's with high quality door and safety products in Köln Germany.
This rules has made by Ritz Kratz Wetterfest for the Biffar.
The folding ruler is in excellent condition. It's 2 metre capacity.
Width: 24,5 cm
Weight: 80 gr
