Feature: 1. Portable indentation hardness tester. Single hand operation, no operating experience required, easy measurement with comfortable grip. 2. The product is made of iron, the indenter is detachable, to maintain the measurement accuracy, the reading is clear, it is durable and has a long service life. 3. The hardness reading is instantly indicated on the dial, no waiting pre?loading or separate measurements, can be used in any position and in any space. 4. Very easy to use, you just contact on one side of the sample test, no need to move or support sample, suitable for large and thick artifacts and assembly parts. 5. The hardness tester is a convenient tool for testing the hardness of aluminum, aluminum alloy, copper, brass and other materials including plastics and fiberglass. Specification: Item Type: Hardness Tester Model: 934-1 Material: Iron Application: Metal hardness measurement Indenter: 26?? truncated coneIndenter End Face Diameter: Approx. 0.517mm / 0.02inRange: 0-100HBa, the effective measurement range is equivalent to 25-135HBW Resolution: 0.5HBa Indication Error: 81-88HBa ??1HBa 42-48HBa ??2HBa Repeatability Error: 81-88HBa ??1.5HBa 42-48HBa ??2.5HBa. Package List: 1 x Hardness Tester4 x Hardness Block1 x Supporting Foot2 x Spare Indenter1 x Correction Wrench1 x Carrying Case1 x Manual Note: This instrument belongs to precise instrument, its service life mainly depends on whether the use method is correct and whether the maintenance is timely and appropriate. Attention should be paid to the following points in use: 1. Prevent contamination. This instrument should often be cleaned with the soft cloth to remove the dust and dirt on the surface of it. Specially prevent the dirty things to get in from the dial seams or indenters, otherwise, the filthy things from those parts might influence on the testing accuracy or cause malfunction.2. Prevent rust. Although all the parts of instrument have been treated to prevent rust, the improper maintenance or long time of use on the production spot without paying attention to maintenance may also cause the rust to some components. When using it, pay special attention to its waterproof performance except clean it frequently, because many parts will bear rust with water, the water in the dial may cause deadly rust to make the instrument useless.3. Prevent falling off. This instrument is made up of many accuracy components, falling off of it will result in the permanent damage to some parts.