WM-250 Manual Rebound Hammer/WM-255 Low Pulse Manual Rebound Hammer/WC-7312 James Calibration Anvil

Explanation:
WM-250 Manual Test Hammer:
The WM-250 Manual Test Hammer is a conventional tool for non-destructive testing of hardened concrete. This easy-to-use instrument provides a quick and simple test to get instant concrete strength measurement across various parts of a structure. The minimum verifiable strength is from 1400 PSI (10 MPa) to approximately 9000 PSI (62 MPa). All concrete test hammers measure the surface hardness of the material they are testing; this is then correlated to the concrete compressive strength. Manual concrete test hammer, Aka rebound hammer, Schmidt hammer, Swiss hammer, Sclerometer are the most widely used non-destructive instruments for compressive strength determination. However, they typically have the largest coefficient of variation. Therefore, the result should be confirmed with another non-destructive test such as the V-Meter MK IV™.
WM-255 Low Impact Manual Test Hammer:
The WM-255 Low Impact Manual Test Hammer is a device for non-destructive testing of hardened concrete for thin wall thicknesses. The device can also be used in rock core drilling. Low impact energy will not damage brittle samples. The minimum verifiable strength is from 1400 PSI (10 MPa) to approximately 9000 PSI (62 MPa). All concrete test hammers measure the surface hardness of the material they are testing; this is then correlated to the concrete compressive strength. The Low Impact Test Hammer has many specific applications. Typically used for thin concrete samples (thickness between 50mm (2”) and 100mm (4”)), such as sidewalks, bridge decks and some driveways. The device can also be used on plaster and mortar to verify consistency. The test hammer can also be used on brittle rock samples where a larger impact would damage the sample. Finally, it is also suitable for rolls of paper and film where the greater impact energy of a standard hammer would damage the surface of the material under test. The paper and film testing area is an important application for the Low Impact Manual Test Hammer.