Higbee, F. G · New York, John Wiley & Sons · leaf 190
ill operateon these shafts in the ratio of 4 to 3. CHAPTER XVIII MODEL MAKING 143. One of the most interesting and practical means ofstud3dng the development of surfaces and the laying out ofpatterns for them consists in the construction of actual scalemodels. This not only affords practice in the… … Fig. 143. — A paper model of a blast furnace piping problem constructed to scalefrom ordinary detail paper and mounted on a wooden base. when they are an actual part of the object on which they lie.While such model making must of course be done to scale yetthe experience acquired serves to…
Geometry, Descriptive
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