Trade Lead Description:
Place the instrument on asteady and smooth even board, after the bubble fixed, the reading should be [a], then rotate level to 180 °, place it again on the original position and take the second reading [b] The Zeroerror of the level is 1/2 (a-b).
Then loosen the fastening screw on one side of the spirit hex wrench of 8mm into the eccentric adjuster and start the zero-setting by turning the adjustrer. At this time, if the instrument is found to incline to the rear, and vice versa. For over 5 degrees, or the deviation of the bubble exceeds half a graduation, it will be necessary to make readjustment by turning the two adjusters on both sides of the level untl the bubble does not move to and frowith the tilting of the indtrument: Lastly, it is also necessary to check whether the zero point deviates or not. If it nolonger deviates, then lock the fastening screw, thus completing the cycle of the zero-setting.
| Type of Offer: |
Offer to Sell |
| Quantity: |
500 |
| Packaging: |
wooden case |
| Price / Incoterms Conditions: |
Not Specified |
Posted from China - Hebei on 19 January, 2011
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