US3721827A
(en )
1973-03-20
Arrangement for automatically focussing an optical instrument
US4515445A
(en )
1985-05-07
Optical system for transmitted-light microscopy with incident illumination
US2701501A
(en )
1955-02-08
Apparatus for testing of centering, coaxiality, alignment
US3010019A
(en )
1961-11-21
Optical aiming device
JPS55140806A
(en )
1980-11-04
Binoculars provided with automatic focus mechanism
US3437395A
(en )
1969-04-08
Optical system for inverted microscope
US1958280A
(en )
1934-05-08
Microscope
SU413368A1
(ko )
1974-01-30
GB869627A
(en )
1961-05-31
Improvements in apparatus for testing alignment and directions
GB719700A
(en )
1954-12-08
Method of and apparatus for testing lenses
GB591991A
(en )
1947-09-04
Improvements in or relating to measuring the focal length of lenses
GB1173107A
(en )
1969-12-03
Improvements in or relating to Microscopes
US2625076A
(en )
1953-01-13
Double beam attachment for contour projectors
US3023663A
(en )
1962-03-06
Die wear microscope
GB913299A
(en )
1962-12-19
Instrument for the determination of the diameter of work pieces or the like
SU1300316A1
(ru )
1987-03-30
Устройство дл определени фокусного рассто ни объективов
GB393892A
(en )
1933-06-15
Improvements in devices for examining the diameter of bores
US2208222A
(en )
1940-07-16
Range finder
GB874119A
(en )
1961-08-02
Improvements in or relating to focimeters
JPS6052373B2
(ja )
1985-11-19
レンズの頂点屈折力を測定するための投射型フオコ
US2843009A
(en )
1958-07-15
Adjustable episcopic illumination for the contour projector
SU591791A1
(ru )
1978-02-05
Оптическа система гидировани и фокусировки телескопа
SU1642427A1
(ru )
1991-04-15
Визирное автоколлимационное устройство
GB570022A
(en )
1945-06-19
A projection system for the inspection of internal surfaces
GB618376A
(en )
1949-02-21
Improvements in or relating to collimators