PTC® 's Model 413 ASTM Type DO Durometer measures the indentation hardness of Fireproof Coating, Paint, Moderately Hard Rubber, Elastomers and Dense Textile Windings.
The instrument features a low glare serialized dial with bold, easy to read numbers. The durometer has a Max Hold hand which maintains the peak reading until reset. Each durometer comes complete with a test block and carrying case.