German railroads ordered general introduction of optomechanical aligning method; basic idea underlying method is to establish principal center lines crosswise and lengthwise of engine frame by optical survey, and then to find positions of axle bearings and crosshead guides from these lines by simple process of mechanical gaging.
Optics in locomotive repair
Am Mach
American Machinist ; 77 , n 15
1933
4 pages
Aufsatz (Zeitschrift)
Englisch
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