During tests on the characteristics of magnetites use was made of the Reichert Micro-Hardness Tester.
Reference:
Gaigher, J. 1972. Appraisal of the method of determining micro-hardness by means of the Reichert micro-hardness tester. http://hdl.handle.net/10204/13052 .
Gaigher, J. (1972). Appraisal of the method of determining micro-hardness by means of the Reichert micro-hardness tester Retrieved from http://hdl.handle.net/10204/13052
Gaigher, JL Appraisal of the method of determining micro-hardness by means of the Reichert micro-hardness tester. 1972. http://hdl.handle.net/10204/13052
Gaigher J. Appraisal of the method of determining micro-hardness by means of the Reichert micro-hardness tester. 1972 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/13052