. The Canadian journal of industry, science and art. FOE THE MICEOSCOPE. 279 of its length, at an equal distance from either end of it, is cut a spiral groove, h i. The ful- crum is at / on the left side of the stage in a small pillar rising out of a slight projection from the lowest plate of it, and is so contrived, that the lever can be easily turned on its own axis. On the other end of this lever at g a milled head is fixed, by which the different motions are given to the lever. An enlarged representation of the adjustment for the fulcrum is given at Fig. 2., representing a small bra
. The Canadian journal of industry, science and art. FOE THE MICEOSCOPE. 279 of its length, at an equal distance from either end of it, is cut a spiral groove, h i. The ful- crum is at / on the left side of the stage in a small pillar rising out of a slight projection from the lowest plate of it, and is so contrived, that the lever can be easily turned on its own axis. On the other end of this lever at g a milled head is fixed, by which the different motions are given to the lever. An enlarged representation of the adjustment for the fulcrum is given at Fig. 2., representing a small brass pillar, which passing through the under plate of the stage, is held down by a forked piece of brass screwed to the under side of the plate, and accurately fitting the neck cut in the pillar at o, so that the pillar can readily be turned on its own axis while firmly held in its place. The end of the lever having a similar neck, is shown at m ; this fits into the pillar and is held in its place by a small forked piece of iron, n, passing down over the neck, and secured by the small screw p. The grooved part of the lever passes through a short brass tube, e ( Fig. 1.,) (an enlarged representation of which is given. ~P liswh). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Canadian Institute. Toronto : Canadian Institute
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Keywords: ., bookcentury1800, bookdecade1850, bookpublishertoron, bookyear1856
