This instrument uses a dial gauge with a full 360° scale and bold, easy to read numbers. The dial scale can easily be read to 0.2 point accuracy. A standard maximum reading hand holds the peak reading until reset. The dial has a red zone below 10 to indicate unreliable readings.
ASTM DO Scale Test Fireproof Coating Hardness, Moderately Hard Rubber, Medium Print Rollers, Elastomers and Dense Textile windings.