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Unlike older plumb bobs, Hilger & Watts instruments pioneered the integrated optical plummet. The manual explains how to focus the eyepiece to ensure the instrument is centered exactly over the ground station. The Micrometer and Scale Reading hilger watts theodolite manual
Hilger & Watts Microptic Theodolite is a precision optical instrument manufactured from the late 1940s through the 1960s. These instruments are renowned for their compact design , weighing approximately 9 pounds (4 kg), and their use of etched glass circles for high-accuracy angle measurement. Science Museum Group Collection Key Specifications and Models Model No. 1 If you’d like, I can: Unlike older plumb