How? or, Spare hours made profitable for boys and girls (1887)
Holbrook, Kennedy · New York, Worthington co. · leaf 155
and forward, till thepoint is found at which the image on it is best defined.Then the board may be fastened (as a, b, c, d, Fig. 2)and the top put on, of which the end should be cut offabout four inches from the screen, as shown in the figure. A piece of black cloth thrown over the head, and… … an inclined mirror, as shown in Fig. 4. The opening a, b, CAMERA OBSCURA. 151 c, d, should in this case be sufficiently large to admit easy-play of the hand in sketching, and also allow an unob-structed view of the image. The mirror may be preparedwithout much difficulty. Get the glazier to cut for…
Handicraft · Amusements
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