How? or, Spare hours made profitable for boys and girls (1887)
Holbrook, Kennedy · New York, Worthington co. · leaf 225
around withouttouching the disk, and are fastened in place by screwspassing through the disk and into their ends. When the r\ Fig 3 mirror is in place, cut the slit d parallel with the edge ofthe mirror, for the wire e to pass through. The mannerof attaching the wire to the back of the mirror is… … Fzy.4 the wire and entire back, and caught down over the edgeof the front, forming a narrow frame to the glass ; theends of this wire should pass through rather small holes A BOYS SOLAR MICROSCOPE. 221 in c c, so that it will not turn easily out of position. Ahandle (see /, Fig. 4) should be placed…
Handicraft · Amusements
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