Surface Comparator

Piyush Technologies offers grit blasting and shot blasting comparator.

A precision nickel comparator plate that conforms to International Standard ISO 8503 for grit and shot blast surface roughness comparison measurement.

When steel has been blast cleaned, the surface consists of random irregularities with peaks and valleys that are not easily characterized. Expert opinion is that this profile should be identified as either dimpled or angular and graded as Fine, Medium or Coarse based on limits specified in ISO 8503. The characteristics are considered sufficient for most painting requirements.

Place the surface roughness comparator against an area of the test surface, compare it to itself in turn by placing the X7 magnifier so that the test surface is viewed. There are two comparators: one for shot blasting and one for grit blasting. These are specially designed to check the roughness of steel surfaces that have been blast cleaned to cleanliness grades SA 2.5 and SA 3 before painting. Both surface roughness comparators conform to ISO 8503.

Available both in shot and grit-blasting comparators. Excellent shot blasting comparison and grit blasting comparison available.

Both Shot and Grit blasting comparators are supplied in a Protective Wallet. Roughness comparator can be used as per AS 3894.5, ASTM D 4417-A, ISO 8503-1, and ISO 8503-2 standards

Ordering Information:

Surface Comparator

R2006	Surface Roughness Comparator (Grit)
R2007	Surface Roughness Comparator (Shot)
RA001	X7 Illuminated Magnifier

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