SURFACE ROUGHNESS (Texture) COMPARISON STANDARDS MADE OF SOLID ELECTROFORMED NICKEL
The LARGEST VARIETY OF STANDARDS available for assessing and specifying, by Symbol, the DEGREE OF ROUGHNESS of machined parts - including every machining method known.

EVERY OBTAINABLE VALUE

• 17 DIFFERENT SETS AVAILABLE
• Each value size is 16mm x 25mm (or 5/8" x 1").
• Overall dimensions of each plate 25mm x 128mm (or 2-1/16" x 5").
• Light in weight - can be carried in pocket. Supplied in Plastic Wallet.
• Model No. 16021, Grit/Shot Blast Comparator
• Maching Method: Grit Blasting/Shot Blasting
• No. of Specimens: 8
• Range Ra µm: 3.2-18 (Grit Blasting); 3.2-25 (Shot Blasting)
• Range AA µ": 128, 320, 520, 720 (Grit Blasting); 128, 420, 720, 1000 (Shot Blasting)
• N Numbers: 5-10
• Manufactured to ANSI-B-46.1-1985
• Each set is supplied in rugged vinyl case which contains a durable instruction card with valuable information in easily understood language. This enables the user to obtain best results when assessing roughness or finish by sight and touch.
• All 18 plates conform to S.A.E. and Mil specs.