What are the methods of calibrating or calibrating a measuring instrument? How to operate?
Long level calibration is correct, if the circular bubble bubble is centered without correction. ?? ?CorrectionIf the bubbles are not centered, adjust the adjusting screws at the lower part of the bubble with the adjusting needle or the six corners. When adjusting, you should loosen the direction of the bubble offset, opposite the correction screw (1 or 2), and then tighten the remaining correction screws in the direction of deviation, so that the bubble center. The tightening force of the three adjusting screws should be the same when the bubbles are centered.
In the 1 test, if the length of the level bubble deviates from the center, first with the foot long spiral level parallel adjustment, the amount of air bubbles to deviate from the center moved nearly half. The remaining half is adjusted with a correction needle, the levelling screw (on the right of the level) is adjusted to the center of the bubble.2 the instrument is rotated 180 degrees, check whether the bubble center. If the bubbles are not centered, repeat (1) until the bubbles are centered. ? ?3 the instrument rotate 90 degrees, with third foot screw adjustment in the bubble.
Calibration, or general bureau of Surveying and mapping instrument shop can sell, there is a special calibration instrument.Correction, with their own equipment, instructions, operation. The instruments are different, but they are similar.The following too much. You go to download a loveligang.5d6d instrument manual view. All kinds of instruments and instructions are available. Registration can be downloaded.
