Eberbach Cathetometer is used for the easy and accurate measurement of vertical and horizontal distances or displacements, especially where close observation is difficult or dangerous. These units are indispensable where ordinary methods would introduce errors of parallax. Units measure either vertically or horizontally. The optical system consists of a short-focus telescope with a drawtube, an eyepiece with cross hair rotatable through 360 degrees, and a built-in image erecting system, making the unit convenient for reading thermometers, other scales, or printed matter. The telescope is 8" long while closed, and opens up to 10 1/2 ". The draw tube can be clamped firmly to prevent shifting between readings while making focusing easy at any distance between 30 cm and infinity. The magnification of the telescope is varying from 20X at 30cm to 8X at infinity while the field is 13mm in diameter at 30 cm and 118 mm at 200 cm. The telescope is mounted on a custom clamp which is mounted onto a column slide and travels the main column by way of a smoothly operating rack-and-pinion system. The telescope swings through a 90-degree plane about the axis of the main column while being supported by a V-cradle type support which can be adjusted laterally for a distance of 3/4" and fixed at any position about its vertical axis. The digital slide system has a resolution of 0.01 mm with an accuracy of +/- (0.02 + 0.00005 x L (mm) ). It is powered by a silver oxide battery.
|Telescope Magnification:||20X at 30 cm - 8X at infinity|
|Dimensions:||Length - 9.5 in | Width - 9.5 in | Height - 37 in|
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