Sheet Metal Scratch Gauge

Pierce holes in wood plastic leather even light gauge metal.

Sheet metal scratch gauge. With the general tools and instruments 820 metal marking gage single bar you can easily trace the edge of a flat surface for ripping and cutting. Scribe commonplace trim lines on galvanized sheet metal quickly and accurately. The compact tr18 expands to 18 46 cm and stores in most tool bags. The tr42 expands to a big 42 107 cm radius.

It is made of steel and the head is hardened. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. The gage is securely locked by a knurled clamp screw and split bushing in the head. Lock the sliding head in place at the desired length and use it as a guide as you drag the scriber along the edge of your work surface.

Scratch gage tempered steel 6 beam graduated a full 6 by 64ths of an inch this tool is extremely useful for scribing lines parallel to a given surface. The steel bar features an engraved graduated ruler for making accurate measurements. Two sizes handle a variety of layout applications. The manufacturers standard gage provides the thicknesses for standard steel galvanized steel and stainless steel.

For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter. The gauge number 18 holds no relevance to the actual measurements. A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters.