BHI-1170 MICRO OPTIC THEODOLITE
Theodolite is a highly precise micro optic instrument. It has horizontal scale made of glass & readings are taken through a microscope by superimposition of the diametrically opposite graduations through a system of prisms / 2 lenses with an accuracy of 10 seconds directly vertical scale is made o9f silver, with vernier to read up to 20†lapped vertical steel axes and optical plummet, Aperture of objective 30mm, Magnification 25x, Stadia Ratio 1:100, Additional constant 0 (zero), Telescope length 200mm , Nearest focusing distance 2.5mm, Horizontal scale (glass), Vertical scale (Silver)
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