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Improvements in or relating to Apparatus used in Teaching the Sciences
Improvements in or relating to Apparatus used in Teaching the Sciences
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机译:科学教学中使用的仪器的改进或相关
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1423. George, J. Jan. 18. Curves, figures, &c., plotting and reproducing.-A transparent stencil-like plate of celluloid &c. has spaces cut in it corresponding with the shape of objects required to be sketched in a student's notebook, so that a line drawing of apparatus or objects &c. used in teaching the sciences can be easily made. In teaching chemistry, the holes would have the shape of the profiles of flasks, beakers, retorts, &c., the edges of the plate being cut to the shape of the bends generally made in glass tubing.
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