METAL PROPERTIES, CHAR, USES, AND CODES - OD1643 - LESSON 1/TASK 2
specifications. The wheel should not be dulled or in a loaded
condition. Use only hand pressure, holding the metal specimen
lightly and constantly against the grinding wheel so that the
spark stream may be seen, so that the area and length of the
TABLE 1.
SPARK TEST CHARACTERISTICS OF METALS (CONTINUED).
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