board, 18 inches lo

l a piece of strip lead as weight; and to the parallel face attach, by means of brads driven in near one edge, a piece of thin wood of the same size as

be made out of stout wire nails-driven into the ends

ch. These are screwed on to the board 2 inches from what may be considered to be the rear edge, and are so sp

Side elevation of disapp

of stout wire with its end bent to form an eye. The i

ng the target vertical. A small wire stop should now be fixed into the baseboard to prevent the arm coming farther forward, and a hole for the operating string be drilled in the protection plate at the eleva

t edge of the board outside the iron screen to

rks are made on the string at the dist

r more targets simultaneously on a long roller, or separ

ter (a sheet of stout iron of the requisite strength) may be affixed to the rear