【Product Material】: Aluminum alloy, 0.01 accurate dial, digital display and pointer model
【Product Function】: This high-precision neck straight measurement dialmeter can measure the deformation and curvature of the neck. From this, there are very reliable and clear measurement standards for deformation and bending of the neck. It is not necessary to look at it with your eyes. Adjust the bend and deformation of the neck, so that we can quickly adjust the straightness of the neck to eliminate problems such as squeezing and noise during piano making and repair.
[Instructions for use]: 1. First adjust the tool to zero on the glass or other pure plane, place the tool on the glass, loosen the screws at the upper right corner of the dial, turn the large needle disc to zero first, and fix the base to 0. 2 If it is an acoustic guitar, push the top of the head to the 12-foot wire, and the feet at both ends will also be pressed on the fret wire. If the pointer is negative, it means that the fingerboard is concave. If it is a positive number, it means that the fingerboard is convex. Adjust the steel bars in the neck. The closer the value is to zero, it is best.
Similarly, digital display models are also used, but the values are more obvious.
Instructions for pointer: The large needle disc needle first turns to zero. When measuring, confirm the base of the small needle first. After the index is in place, the base number is reduced. Turn the large needle once, and turn the small watch needle 1mm (1 grid), representing 1mm, such as the large needle If you point to 9, it means 0.09mm, if you point to 90, it means 0.9mm. The small dial represents mm, and 1 grid means 1mm. If the small needle turns to 2 grids, the large needle points to 43, and the data is 2.43mm.
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