ARRANGEMENT OF BASE.
The middle part of the base B (Fig. 68) measures in. by 8 in. Along the two longer edges of one face are glued two strips of wood about in. broad and just a shade thicker than the wood which is to be used for the part of the base marked c. Over these are glued strips (E E, Fig. 6S) about 1 in. broad, between which and the base piece s slides the piece c. B is hinged to A either by two small hinges or by a strip of brown paper glued on ; over Inc paper is a rattier broader which is made as follows. From a piece of good stout cardboard, or preferably millboard, measuring 10 in. by 9 in. is cut a square measuring a little more than in. by a in., its sides being parallel to the edges of the cardboard, the remains of which form a frame all in one piece (see J, Fig. 69). Now cut three pieces of wood (s, Figs. 6S and 69) in. square, two 103, in. long and the third 8 in. long. These arc glued to one face of the frame, which is then firmly fixed to the base-board A by gluing and by two small screws. The two parts must be fixed exactly at right angles to each other, and the back may be ren dered firmer by means of supports, D D (Fig. 68). Before fixing the back in posi tion it is advisable to fasten on the bel lows, which will be described later. Fig.
69 is an elevation of the back, Fig. 70 showing the camera packed up.
strip of black calico or linenette. The front part of the base c is 8 in. long and about 7 in. wide. It slides over s, and should be just wide enough to slide in with a little friction. Across the front end and underneath is fastened a piece P, 2 in. broad, cut with the grain of the 'wood at right angles to the grain in c, thus tending to prevent c from warping ; it should pro ject about in. in front of c. At the front end of the base are two upright pieces F F, firmly attached at right angles to it, and grooved on the inner faces to receive the camera front. Their height should be 4 in., but in breadth and thickness they may be made according to taste. Before attaching the bellows, the base board should be completely finished. A flat piece of brass G should be fixed to A by a small screw near the front edge, but left so as to turn. When the cainera is to be used this is turned so as to project over n, which is thus kept in the same plane as A.