The probe is used to accurately measure the distance between the surfaces. 13 plates of tool steel with a thickness of 0.05 to 1.0 mm. Convenient for measurement gaps, such as in valves or candlelight; Dimensions: 0.05; 0.1; 0.15; 0.2; 0.25; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 1.0;