Sheet Metal Scratch Gauge

For example 18 gauge steel according to a gauge conversion chart is 0 0478 inch or 1 214 millimeter.

Sheet metal scratch gauge.

The gauge number 18 holds no relevance to the actual measurements. 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. 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 gage is securely locked by a knurled clamp screw and split bushing in the head.

Also known as a marking gauge this scriber draws precise straight lines without the need for a straightedge or ruler. 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. Pierce holes in wood plastic leather even light gauge metal. The needle point scriber easily marks wood plastic hardboard and other materials.

A gauge conversion chart can be used to determine the actual thickness of sheet metal in inches or millimeters. Two sizes handle a variety of layout applications. The tr42 expands to a big 42 107 cm radius. It is made of steel and the head is hardened.

The compact tr18 expands to 18 46 cm and stores in most tool bags. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. Scribe commonplace trim lines on galvanized sheet metal quickly and accurately.