Image from page 81 of "The Iron and steel magazine" (1898)
Title: The Iron and steel magazine
Authors: Sauveur, Albert, 1863-1939
Publisher: Cambridge, Mass. [etc.]
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto
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Text Appearing Before Image:
Figs. 2 and 3. Apparatus forHigher Pressures, 60 to 100Tons
Text Appearing After Image:
Fig. 4. Micrometer Gauge This is placed on the test block and leveled by means of the fourset screws until the gauge points just touch the surface of thematerial, the fixed point resting exactly on one edge of the cavityand the other one moved to and fro by turning the micrometer Metallurgical Notes and Comments 73 screw, until it touches the other edge at a point diametricallyopposite the former one. By this means the diameter of theimprint can be gauged to within the one one-hundredth part of amillimeter. A magnifying glass is employed to examine the posi-tion of the gauge points. By applying the results of this measure-ment to the apparatus represented in Fig. 5, the depth and angleof the cavity can be read off at once on the crossed scale withoutanv calculation or reference to tables.
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