A classic ruler made of glass birch with joints in Swedish steel, which enables thin joints and a flexible ruler. Graduation with black digits on both sides, metric at the bottom and English inches at the top.
Coated with a water-based protective varnish that increases resistance to dirt and moisture.
The joints are heat treated, varnished and oiled at three points to give them first class properties.
All caliper joints are checked twice in production with a high-speed camera.