• Coating thickness gage makes use of both eddy current and magnetic induction
• Measuring range: 0-40mils (0-1000µm) max
• Minimum substrate thickness: Ferrous: 20 mils (0.5mm), Non-ferrous: 2 mils (50µm)
• Guaranteed tolerance (after one-point calibration): +/- 1-3%n or 2µm (whichever is greater)
• Resolution: 0.1µm/0.1mils (0-99µm); 1µm (over 100µm)

The Starrett 3813 Coating Thickness Gage is a state-of-the-art coating thickness gage that utilizes the characteristics of both eddy current and magnetic induction to perform two types of thickness calculation. The coating thickness gage uses an integrated probe to automatically determine whether the substrate is ferrous or non-ferrous. Then, it either detects the thickness of the nonmagnetic coating on a magnetic substrate (ferrous) or the insulating coating on a non-magnetic conductive substrate (non-ferrous). Testing performance is non-destructive and extremely accurate. The Starrett 3813 Coating Thickness Gage is ideal for a broad range of applications in manufacturing, engineering, and commercial inspection.

• Measuring range: 0-40mils (0-1000µm) max.
• Resolution: 0.1µm/0.1mils (0-99µm) or 1µm (over 100µm)
• Guaranteed tolerance (after one-point calibration): ±1-3%n or 2µm (whichever is greater)
• 4-digit display, .40" (10mm) height
• Minimum measuring area: .20 x .20" (5 x 5mm)
• Minimum radius of curvature: Convex: .12" (3mm), Concave: 1.2" (30mm)
• Minimum substrate thickness: Ferrous: 20 mils (0.5mm), Non-ferrous: 2 mils (50µm)
• Zero calibration; Foil calibration
• Maximum surface temperature of test object: 302°F (maximum contact time 2 seconds)
• Power source: Four AA batteries
• Includes steel and aluminum substrate samples; Four calibrated thickness samples
• Dimensions: 6.39 x 2.74 x 1.27" (161 x 69 x 32mm); Weight: 9oz. (260g)