Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 163
it has dried. The small concave lens, or eyepiece, is mounted in the sameway, but since the lens is only 1 inch in diameter, cut the stripof cardboard % inch wide and 4% inches long and the strip ofthick pasteboard % inch wide and 3^ inches long; this doneglue them together, cut the groove and… … h Fig. 156.—Telescope. Cross Section View. the tubes together and you will have as good a telescope as theboy who invented it. It is shown in cross section in Fig. 155. You should, however, make two caps, one for each end ofthe telescope to cover the lenses when not in use. This littletelescope is…
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