Sheet Metal Scratch Gauge

Gauge or gage sizes are numbers that indicate the thickness of a piece of sheet metal with a higher number referring to a thinner sheet.

Sheet metal scratch gauge.

The manufacturers standard gage provides the thicknesses for standard steel galvanized steel and stainless steel. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. 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 tr42 expands to a big 42 107 cm radius.

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. Pierce holes in wood plastic leather even light gauge metal. Also known as a marking gauge this scriber draws precise straight lines without the need for a straightedge or ruler. The compact tr18 expands to 18 46 cm and stores in most tool bags.

The steel bar features an engraved graduated ruler for making accurate measurements. A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. 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. It is made of steel and the head is hardened.

Two sizes handle a variety of layout applications. For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter. Scribe commonplace trim lines on galvanized sheet metal quickly and accurately.