IRON AND STEEL TOOLS.
It is difficult (says a Belgian journal) to distinguish between iron and steel toola. They have tho same polish and workmanship ; use will commonly alone show the difference. To make the distinction quickly, place the tool upon a stone, and drop upon it some dilute nitric acid (four parts of water to one of acid). If the tool remains clean, it is of iron ; if of steel, it will show a black spot where touched by the acid. These spots can be easily rubbed off.
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Bibliographic details
Otago Witness, Issue 1383, 1 June 1878, Page 5
Word Count
89IRON AND STEEL TOOLS. Otago Witness, Issue 1383, 1 June 1878, Page 5
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