First of all, it is to choose a regular big brand manufacturer, so as to ensure the quality of the image measuring instrument.
Secondly, buying a camera depends on whether its main accessories are brand manufacturers (ccd
camera lens
slide
) all these have an impact on the accuracy and performance of the second dimension, and of course it is best to go to the scene to see the instrument yourself:
First, see whether the image of the secondary image measuring instrument is clear and whether there is Xue Huadian;
Second, see if the transmission of the second element is smooth;
Thirdly, the marble structure of the image measuring instrument is definitely much better than cast iron or cast aluminum. After all, marble has been buried underground for thousands of years, and its stability is better than that of cast iron, so it is not easy to be deformed and scratched by heat.
Furthermore, it is better to see whether the hardware and software of the video image measuring instrument are developed by itself or obtained original patents by itself, which at least shows that the technical strength of its company is still good.
Finally, I suggest you investigate the after-sales of those manufacturers. It is definitely impossible to have quality without after-sales service. After all, if you buy such an expensive thing and don't do formal professional maintenance, its service life and accuracy will be affected. The price of some manufacturers' instruments is very low, but they will be ignored after being sold to you, so the warranty period is also very important.