Thread Needle Diameter Dial Test Indicator Contact Point Length Measuring & Gauging Tools Features: Compatible with most series dial test indicators. Constructed from steel for wear and magnetic resistance. Suitable for dial indicator, dial thickness gauge, depth gauge, and other interchangeable tools. Designed for probing the bottom of holes or slots. Specifications: Material: Stainless steel, tungsten steel Sizes: R 0.15 x 7 L R 0.15 x 13 L R 0.15 x 22 L R 0.15 x 30 L R 0.15 x 40 L R 0.2 x 50 L R 0.3 x 13 L R 0.3 x 22 L R 0.3 x 40 L R 0.3 x 30 L R 0.4 x 22 L R 0.4 x 50 L Note: Please allow a 0-1 mm error due to manual measurement. Ensure this is acceptable before purchasing. Colors may appear slightly different on various monitors. Package Includes: 1 x Dial Test Indicator Contact Point