Indian standard : method for verification of rockwell hardness testing machines ( Scales A-B-C-D-E-F-G-H-K ) 

 -  Bureau of Indian standards  New Delhi  1988 
 - 6p. 
<br/><br/> IS : 3804 - 1988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Indian Standards