Its great advantage is that a hardness value is directly read from the dial of the machine; its disadvantage is that several hardness scales are involved, two of which are required to cover the hardnesses commonly found in steels. The machineanbsp;...
|Title||:||The engineer's guide to steel|
|Author||:||Albert Hanson, James Gordon Parr|
|Publisher||:||Reading, Mass. - 1965|