this instrument, both based upon the development of and probably well lantern objective of low power is used and the slots the original picture in a subdivided rectangle. It is known to many, it is are sharply focused on the large disk. The disks are obvious that if a subdivided square can be… … In the sleeve in the standard is journaled a shaft trical line, a distance equal to the Fig. 8.-R0TARY DISK FOR THE LANTERN. versed sine of this arc. From this having at one end a crank, and a pulley of the same center describe circles tangent to the size as that above it at the upper end of the…
Cocoanut · Ginseng · Patents · Illustrated · Munn · Scientific American · Express money · Molten metal · Cotton seed · Seed oil · Cocoanut butter · Magnetic magnifying · Sign language · American supplement · Magnifying glass
Internet Archive · Public domain (published before 1931). Free to use for anything.
