The Professional Plaster Joint Planner.
A professional handtool, when building plasterboard walls. Cutting room fore plaster in the plasterboard joints. It saves time, and makes a parrallel blade cut. Less glassfiber dust, and knife injuries.
Handy invention in compressed zink. Made by RH
The Plasterboard Planner in action. Two plasterboard joints with out plaster.
10 Plasterboard Planners in tabledisplay. Fore the counter desk.