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Show Blocks for Automobile Jacks Are Convenient A handy pair of blocks shown in the drawing will more than repay the slight cost and trouble of making them, in the convenience that attends their application as indicated. The blocks can either be made from solid four-Inch timbers, or may be built up DETAIL Or JACK BLOCK jT?- v JACK BLOCKS l - - ' - A Set of Jack Blocks, to Provide a Firm and Even Base for the Jack on Soft or Uneven Ground, and to Speed Up the Work. from two-inch planks In the manner shown, and besides serving as a base for the jack on soft or uneven ground, they may be used for blocking the wheels of the car. C. C. Spreen, Birmingham, Bir-mingham, Mich., in Popular Mechanics Magazine. |