Page 53 - My FlipBook
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Fig. Ki.
Fig. 15. Instruments wrongly coiitra-iingled. Their points are so far from the line of the
central axis of the shaft, as shown by the line, that they incline to twist, or turn, in the fingers
when the effort is made to cut with them. They are out of balance.
Fig. 16. Instruments correctly contra angled. Their points are brought close enough to the
line of the central axis so that they will not bo inclined to twist, or turn, in the fingers when the
effort is made to cut with them. They are well balanced.
4a
