B67-58 ANGLE BISECTOR. Langlais Patent. Marked with maker name and 6/12/94 patent date, this unique bevel has rotating gears at the joint which allow the angle between the blades to be adjusted and locked with two cam levers, or the blades can be folded into body for storage or transport. Mahogany body, brass trim with patent date, some toolbox dinging and scratches, but otherwise in nice condition. From the collection of David Jeffers. Good+ 100-200