Product Description The external micrometer is highly accurate to a strictly minimal variance. For your confidence, it has undergone rigorous testing to guarantee consistent precision and quality. With anvils made of tungsten carbide, the micrometer is resistant to corrosion. The positive spindle lock holds the anvils in place to ensure an accurate recording of measurement. It has an adjustment spanner for easily resetting back to zero and comes in a tailor-made case for storage and easy carrying. Micrometers such as these are commonly used for maintenance work or engineering applications. It measures the groove diameter of shafts, keyways, and other hard-to-reach features, the Blade Micrometers anvil and spindle are blade shaped. Key Features - Suitable for groove measurements - Non-rotating spindle - Accuracy conforms to DIN 863/BS 870 - Corrosion-resistant Tungsten Carbide measuring face/anvils for exceptional durability - Satin-chromed barrel and sleeve - Setting rods with models