Manual of cardboard construction for third, fourth, and fifth grades (1902)
Kunou, C. A. (Charles A.) · Los Angeles : Los Angeles City Public Schools · leaf 83
raw concentric circles inside, 5 and 1^2 respectively. Draw semicircles I/2 radius on the 5 circle. Draw sector 7i/^. Cut around exterior and interior circles, and cut out sec-tor, leaving I/2 flap on one side for fastening. Perfor-ate semicircles and also the circle upon which they aredrawn, using… … 78 1^0, 3, 150£« Construction: Draw piece for frame of box according- to drawings. Score and fold. Before fastening together cnt slits in obliqne corners of frame, for bottom of box. In cutting slits bore a hole in each end of slit, using point of compasses; this ensures definite cutting.Fasten…
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