aliper. The caliper can then be set to the exact di- water carts, sand carts, and steam rollers, moving as recess is formed, in which the spring catch C is se- mension required by turning the thimble, and in com- one body at the full speed of, and led by, the steam cured. This spring is formed with… … nected by links G to a yoke H. The-latter bears against a shoulder on the tapered head J of the con-
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