We may, instead of using the pointer at k and l, or in addition to so using it, apply a square against the chuck plate and bring the blade against the work, as shown at r.
We have now to turn the pin i and end face, and to do this we simply reverse the work, end for end, and bolt it as before. But we may now employ the trued surface e as an aid in setting by causing it to abut against the chuck plate surface, and, as an aid to finding that it abuts fair, we may put two strips of the same piece of paper behind it, one on each side of the square, and, after the work is bolted, see that both are held firm; but it is necessary to test with the pointer as before, as well as with the square.
It is obvious that the angle plate requires counterbalancing, which is done by means of the weight w. ([Fig. 900]).
Fig. 902.
Fig. 903.
An excellent example of angle plate chucking is furnished in a pipe bend requiring both flanges to be turned up. The method of chucking is shown in [Figs. 902] and [903], the flanges being simply bolted to the angle plate. The work may be set true to the body of the bend close to the neck of the flange or by the circumference of the flange. The face of the flange will be held true one way by the face on the angle plate, but must be set true the other way. The truest flange should be the one first bolted to the angle plate.