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Fine graduated scale in 1/2 0, verniers least count 1 minute of arc
28mm dia achromatic objectives, 10x remsden eyepiece, fine cross reticule
Table and telescope have fine adjustment mechanism, adjustable slit
Both telescope and collimeter tubed provided with fine adjustment
Plywood packing case, instruction manual, dustcover.
Product No. 22290 Spectrometer 6" Scale, Product No. 22291 Spectrometer 7" Sacle
Product No. 22292 Spectrometer Delux Model 9" Scale vernier of
30 sec. (20sec. vernier optional at same cost)
Product No. 22295 Spectrometer Delux Model 10" Scale vernier of
30 sec. (20sec., 10sec. vernier optional at same cost) |
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