Metal gauge measuring tool

It is easy to read. No more saying I think it is this thick! To use wire gauge measure do you strip the wire first or use it with the plastic sheathing still on it? The plastic would need to be stripped off first before gauging the wire size.

Answered by: Kelly H. This gauge is AWG. Is this made in USA? This is manufactured in China. Answered by: S Church. What is the diameter of this gauge.

This gauge is 4. Answered by: KHoffnagle. Check out the gauge chart below and then begin your search here. Looking for steel products? Lookin for stainless steel? What's the difference between hot-rolled and cold-rolled carbon sheet and coil? Let's dig into the specifics of each. When it comes to steel bars, quality matters.

And when talking specifically about carbon bars, that quality comes in two distinct forms. Please Log-in or Continue as a Guest. Save Cancel. Name: Value cannot be blank. New Shopping List. If the panel is made of aluminum, the magnet will NOT react. Some stainless steels also are not magnetic and will not react. Aluminum : Uncoated and anodized panels. Single-ply Membranes : For all single-ply membranes excluding modified bitumen, self-adhering, and fleece-backed. Identify the type of material you are inspecting.

Use the magnet to help you determine if you are looking at aluminum or steel. Start with the widest slot. Holding the gauge loosely in one hand at a 30 degree angle to the material, drag the slot along the edge of the panel or membrane. Note that the slightest burr rough edge on the material after cut will misrepresent thickness.

There are also roll-back magnetic pull-off thickness gauges that function in a similar manner to the magnetic pull-off gauges described above. These devices feature a permanent magnet attached to one end of a balance arm that can pivot as the user rotates a dial with their finger. A calibrated spring is used to display the force needed to pull the magnet away from the surface, which again is a proxy for the coating thickness between the magnet and the underlying substrate.

Three additional instruments that can be used to measure coating thickness are magnetic induction instruments, electromagnetic instruments, and eddy current thickness gauges. The first two of these three function by measuring the change in the magnetic flux density at the surface of a magnetic probe as it is brought near the surface of a coated steel surface.

The measured flux density values can be used to estimate the thickness of the coating applied to the surface. The eddy current thickness gauge works on non-conductive coatings that are applied to non-ferrous metal substrates. These units generate a high-frequency alternating current which generates an alternating magnetic field. As the field approaches the surface, the alternating magnetic field creates eddy currents on the surface which in turn result in the creation of an opposing magnetic field.

The opposing field can be detected by the eddy current thickness gauge and used to estimate the coating thickness. Material thickness gauges and coating thickness gauges require calibration against standard material test pieces in order to assure that the device readings provide and maintain accurate values. For example, with ultrasonic coating thickness gauges, the speed of the sound energy will be dependent on the material in which it propagates.

Table 1 below shows the speed of sound transmission in meters per second for different material types. This characteristic must be stored and used to establish the pulse transit time and therefore the material thickness. Table data: Cygnus Instruments Inc.

Similarly, material thickness gauges are often sold with calibration blocks that can be used to calibrate the gauge by placing material of known thickness between the contact pins or caliper arms to validate readings. Wire and sheet metal thickness gauges are metal templates into which precision holes and slots have been cut. These devices can enable a user to easily assess the gauge number of sheet metal for steel or iron and wire gauge size for steel, aluminum, brass, and copper wire.

Gauges cover the U.