AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
A complete description, discussion and scientific analysis of stagger errors found in the vertical axis of a theodolite is presented. Stagger errors are the deviations of the real vertical axis of a theodolite from the ideal axis which are due to imperfections in vertical axis bearings. An understanding of the stagger error source is a prerequisite to high precision geodetic surveying involving theodolites. Author
Trans. of Allgemeine Vermessungsnachrichten (West Germany) v10 p483-491 1969.