Leeds, Charles Carley, 1870- · New York, D. Van Nostrand company · leaf 14
one counter-clockwise.The result should be one clear sharp circle; if this is not the case, thelead should be adjusted to correct the error. SETTING COMPASS.—With the large compass, take a radiusof ij inches and describe a 3-inch circle. Now, test the circle for a diameter of 3 inches, using the… … Fig. I a. TANGENT CIRCLES. —TRIANGLE.— Describe three 2-inchcircles tangent to one another. Surround the circles by a tangent triangle. Line in the triangleand test it for accuracy, using the dividers; the sides should be ofequal length. Repeat this three times. Great care should be exercised by…
Mechanical drawing
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