Digital Theodolites The DT210, DT510 and DT610 are the most versatile entry-level instruments you can buy. With an IP66 waterproof rating the theodolites operate dependably even where conventional theodolites do not, such as sudden showers, continuous drizzling rain or the high humidity of underground construction sites.
Laser Theodolites
Cope with both Parallel beam and focused beam applications with the LDT50 in a One touch switch.
Parallel beam: for directional control during excavation
Focused beam: for precise aligning and positioning.
Optical Theodolites
Both horizontal and vertical circle graduations are displayed by means of a special patented method known as "co-incident image projection". This method employs the technique of projecting opposite side circle readings into the read-out through a special prism thereby assuring optimum and equal light intensity and entirely eliminating parallax. Circle graduation, indexing and micrometer graduations are thus displayed with an accuracy of 0.5 seconds of arc. Quick readings are obtained after sighting, as the micrometer eyepiece is aligned parallel with and close to the telescope. The observer makes readings easily and rapidly without changing his position.
