First take the bars X and Y and arrange them as shown in . It is most important that the projections a
of X face upwards, and that the projections a
of Y face towards the centre. Then take the bar Z and bring it flat into the slot of X. The little slot of Z, however, must remain above
the slot of X. Then slide the bar Y along to the centre, so that the part lettered c
slips into the little slot of bar Z.
This may seem confusing to read, but it is easy to follow when the pieces are in one's hand. The result of this rather clever arrangement is that the six arms of are all exactly the same length, width, and thickness. They are also arranged so that in each arm may be clasped one piece each of . The three central arms may, of course, be set up in a different order, and here we have merely chosen the way that is the most simple to describe and illustrate.
Fig. 377.—Beginning to place on the Cross Pieces.
Fig. 378.—Placing the Key Piece to overlap end projection of Central Bar.
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