Descriptive geometry . Prohlems 1, 2. Draw and develop an helical convolute. (Arts. 129-131, pages 93-95.) Problems 3, 4. Delvelop one quarter of the lamp shade. Problem 3. (Art. 126, page 91.) Problem 4. (Art. 123, page 86.) Unit of measure, | inch. Space required for each problem, 5x7 inches. Angles bet-wreen GL and traces of qi Kt^ f\f%planes, multiples of 15°. Measurements from GL, in light type, and from right-hand division line, in heavy type. ? L-M I C ^O.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectgeometrydescriptive