In use, the device is set with the lens tube directed toward the scene to be painted or sketched and the lens focused so the reflected picture will be seen in sharp detail on the glass.  Select your colors and put them on the respective colors depicted on the glass.  If you wish to make a pencil drawing, all you have to do is to fill in the lines in the picture on the ground glass.  If a plain glass is used, place tracing paper on its surface, and the picture can be drawn as described.

** How to Make Miniature Electric Lamp Sockets [270]

A socket for a miniature lamp can be made as shown in the sketch.  A brass spring wire is wound around the base of the threads on the lamp and an eye turned on each end to receive a screw and a binding-post, as shown in Fig. 1.  A piece of metal, preferably copper, is attached to a wood base as shown in Fig. 2 and the coil-spring socket fastened across it in the opposite direction.  Bend the wire so that the spring presses the lamp against the metal.  If the wire fits the lamp loosely, remove the lamp and press the sides of the coil closer together.  The metal parts can

[Illustration:  Wire Socket]

be attached to any smooth surface of wood without making a regular base.  —­Contributed by Abner B. Shaw, No.  Dartmouth, Mass.

** Imitation Arms and Armor-Part V [271]

The preceding chapters gave descriptions of making arms in imitation of ancient weapons, and now the amateur armorer must have some helmets to add to his collection.  There is no limit to the size of the helmet, and it may be made as a model or full sized.  In constructing helmets, a mass of clay of any kind that is easily workable and fairly stiff, is necessary, says the English Mechanic, London.  It must be kept moist and well kneaded.  A large

[Illustration:  Making the Clay Model and Three Helmet Designs]

Board or several planks, joined closely together, on which to place the clay, will be necessary.  The size of this board will depend on the size of the work that is intended to be modeled upon it.

The way to make a helmet is described in the following method of producing a German morion, shown in Fig. 1.  This helmet has fleur-de-lis in embossed work, and on each side is a badge of the civic regiment of the city of Munich.  The side view of the helmet is shown in Fig. 1.

The clay, is put on the board and modeled into the shape shown in Fig. 2.  This is done with the aid of a pair of compasses, a few clay-modeling tools, and the deft use of the fingers.  The fleur-de-lis are slightly raised, as in bas-relief.  To aid in getting the helmet in correct proportion on both sides, and over the crest on top, cut out the shape from a piece of wood, as shown in Fig. 3, with a keyhole saw.  This wood being passed carefully and firmly over the clay will bring it into shape, and will also show where there may be any deficiencies in the modeling, which can then be easily remedied by adding more clay.  The cut-out pattern shown in Fig. 4 is the side outline of the helmet.