e back of hard wood, the inside and outside edges of the back being covered with sheet metal to prevent undue wear. In addition to this, however, a bevel Fug. 20. square is required; and it is best to have one with a sliding blade, so that the length it projects from the square back, on either… … Iron Sheets Thinner than Paper. chisel should be lapped upon the hand to remove the fine wire We have heard of iron as thin as paper, but have just had Of compasses there are two kinds, one being plain and edge left by the oilstone. a packet of specimen iron sheets brought to our office, not having…
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