Types of Thickness Gauges & What You Need To Know

A type of handheld measuring gadget, a thickness gauge, helps you measure the thickness of sample materials. They are extensively used in the manufacturing, production, and engineering sectors to ensure that the industries comply with the specified product thicknesses as outlined under governmental regulations.

The Working Principle

Different types of thickness gauges work on different principles. For example, X-ray thickness gauges measure the ratio of radiation that passes through a material. Ultrasonic thickness gauges operate by calculating the time required by sound waves to penetrate the gauge, reach the back of the object, and return to the gauge. Laser gauges work through laser sensors, while width gauges use digital line scan cameras.

Types of Thickness Gauges

As we mentioned, thickness gauges can be classified into various categories based on their operating principle. There are X-ray gauges, laser gauges, isotope thickness gauges, and ultrasonic gauges. You can also segment gauges by their application. For example, lab gauges are deployed in powdered metals industries. Width gauges are exclusively used to measure the width of sheet or strip products.

The highly versatile coating thickness gauge calculates the thickness of coatings on ferrous materials, which include steel. Non-ferrous materials comprised of plastic and brass are applied to industrial-grade tools. Coating thickness gauges measure the dimensions of the molded plastic over industrial saws, drills, grinding tool handles, and medical equipment. Coating weight gauges measure the thickness of various types of metallic coatings.

What to Consider before Buying a Thickness Gauge

When you buy a thickness gauge, there are several factors you should consider.

Start with the sample material. Is it metal, plastic, or ceramic? That can help you determine the correct type of thickness gauge you need. But if your sample material is rubber and composites, you might need a more advanced measuring gauge.

Also, the thickness measuring range of the gauge. Is it suited for your sample? While thicker materials can be measured at lower frequencies, thinner substances need higher frequencies. Additionally, you need to consider the surface of the sample. Is it convex, concave, or irregular? For different types of surfaces, you need different types of thickness gauges.

Another factor to consider is precision. Finer samples like lenses, glass, and paints might require gauges with higher resolutions. Finally, decide on the budget. Shortlist the features you need and then buy a certified thickness gauge or a standard thickness gauge according to your requirements. For more information on gauges, contact the experts at Global Gauges.