A delicate test of balancing may be attempted with the shovel and tongs.
The position of the two implements is shown in the illustration Fig. 20.
The extremity of one arm of the tongs is rested against the inside of
the shovel, and the other extremity is placed in the angle formed by the
junction of the shovel with the handle. By delicate poising the two may
be induced to remain in equilibrium in the position illustrated. A
formation which permits of the tongs being engaged with the shovel after
the manner shown is an important factor.
[Illustration]