Elcometer 123 Surface Profile Gauge
Surface Profile
The degree of profile on the surface affects a coating’s overall performance. The height of the
profile (measured from the peaks to the troughs) determines aspects such as adhesion, coverage
and overall volume of coating used. If the profile is too large the amount of coating required to
ensure adequate coverage increases, otherwise there is a danger that the peaks remain uncoated
-   allowing rust spots to occur. If the profile is too small, there may be an insufficient key to produce
adequate adhesion, leading to premature coating failure. Ensuring the correct surface preparation
optimises the performance of the coating and material usage.
There are four different methods available for testing surface profile:
-        Surface Comparators
-        Replica Tape
-        Surface Profile Gauges
-        Surface Roughness Testers
This easy to use gauge measures the peak-to-valley height of a blast cleaned surface.
The average of a series of measurements provides an indication of the surface roughness and allows
the surfaces to be compared as blasting proceeds.
Metric and Imperial versions
TECHNICAL SPECIFICATION
Range	0 – 1000 µm (0 – 40 mils)
Scale	2 µm (0.1 mil)
Dimensions	105 x 55 x 25 mm (4.1 x 2.2 x 1”)
Weight	335 g (8 oz)
Part Number	E123A--M-	Elcometer 123 Surface Profile Gauge, Metric Version
	E123A--E-	Elcometer 123 Surface Profile Gauge, Imperial Version
Packing list	Elcometer 123 Surface Profile Gauge, glass slide, 2 mm allen key, carry case and operating instructions