Abstract: A combination of a unique test block and a modification of the anvil on a hardness testing machine wherein the combination enables the testing block to easily and quickly align with the indenter of the hardness testing when said testing block is placed on the hardness testing machine's anvil. At least one spring-loaded ball detent is provided that enables the test block to be positioned using one of a plurality of dimples on said testing block. A cradle is provided when a double-sided test block is used to keep the surface of the test block from being marred when said testing block is placed on the anvil. An alternative embodiment uses more than one detent on the anvil which keeps the test block from rotating while the test block is on the anvil.