The probe is used to accurately measure the distance between the surfaces. 20 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; 0.10; 0.15; 0.20; 0.25; 0.30; 0.35; 0.40; 0.45; 0.50; 0.55; 0.60; 0.65; 0.70; 0.75; 0.80; 0.85; 0.90; 0.95; 1.00;