New photoelectric method for sighting objectively scale graduations
Keyword(s):
Keyword(s):
1967 ◽
Vol 17
(4)
◽
pp. 557-571
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1938 ◽
Vol 225
(5)
◽
pp. 527-547
◽
1987 ◽
Vol 8
(3)
◽
pp. 36-38
◽