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- Of two gears that mesh, the one that has the greater number of teeth is called the gear, and the one that has the fewer teeth is called the pinion (Figure 218). For each of the problems, set up a proportion, and determine the unknown value, x. Round the answers to 1 decimal place where necessary.A micrometer reading is made at dimension D on a tapered shaft (Figure 217). For each of the problems use the dimensions given in the table, compute the taper, set up a proportion, and determine diameter C to 3 decimal places.A piece is to be cut to the dimensions and tolerances shown in Figure 29-14. Determine the maximum permissible value of length A. All dimensions are in inches.