| 摘要 |
A hand tool including superposed open-end wrenches adapted for ready and effective engagement-at the same time, and in clearance relation to adjacent obstructions-with the lock nut and valve clearance adjustment nut, respectively, of a rocker arm assembly of an overhead cam engine; the tool providing, in unitary combination with the wrenches, hand-manipulated parts by means of which the wrenches are selectively and independently operated from a point a distance thereabove.
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