A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Liquid-prism optical plumb
Note on new kind of optical plumb devised by Defence Standards Laboratories, Victoria, Australia; optical plumb indicates vertical direction independently of tilt angle; series of liquid-filled cells deviate vertically directed ray of light by angle equal to tilt of apparatus away from vertical; diagram.
Liquid-prism optical plumb
Note on new kind of optical plumb devised by Defence Standards Laboratories, Victoria, Australia; optical plumb indicates vertical direction independently of tilt angle; series of liquid-filled cells deviate vertically directed ray of light by angle equal to tilt of apparatus away from vertical; diagram.
Liquid-prism optical plumb
Engineer
Engineer ; 225
1968
464 pages
Article (Journal)
English
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