To make a finder for a hand camera, procure a plano-convex or bi-convex spectacle lens, unedged or centred, of about 1-in. focus (cost, 3d.); also a piece of zinc and a piece of silvered glass. Out the zinc to the shape shown in the figure, and bend on the lines A, B, C, D, E, and F. The first two, being bent outwards, enable it to be attached to the camera top; and the last two, bent inwards, form a support for the ground glass, which rests at an angle of 45°. Without knowing the make of camera it is intended for, it is impossible to state how the finder should be finished and attached; a very common plan, however, is not to make the finder complete in itself, but to let the camera top and front form the remaining sides. In this case, cut an opening in the camera top l 1/4in. by lin., and sink a rebate to hold the ground glass, rough side inwards. This may be fixed in with pins. Fix the frame with the mirror, and sink the lens in a recess until the image is sharp, then fasten in with a ring of wire. With strips of black paper, block out on the ground glass of the finder as much of the picture as is not shown on the screen of the camera. The best finders for instantaneous work are those of the brilliant pattern, but these are not easily made.

One should be chosen the image of which does not vary witli the angle at which it is viewed.

Making a Finder for a Hand Camera.