Jewelers Adjustable Saw Frame. This adjustable saw frame can hold 5.1 inch (13cm) (130mm) blades. It is made of high steel with a wooden handle. The blades get secured in the wing nut screw clamps and a thumb screw adjusts the length of the frame. These are used for cutting rubber, plastics, wax, plaster and similar materials. It has excellent alignment for straight and accurate cutting.
