Da You 9815-LM40-Li

　　How to choose a good rangefinder?Sichuan Surveying and Mapping Instrument Company will introduce you to the relevant knowledge of Dayou 9815-LM40-Li:

　　Does it have high repeatability accuracy?

　　A good laser rangefinder should have high repetition accuracy,that is,it can continuously measure the same point for many times,and the digital repeatability is high.

　　Does it have high practical accuracy?

　　The error between the measured value of a good laser rangefinder and the actual distance should be very small.

　　Does it have strong environmental adaptability?

　　A good laser rangefinder should ensure that the error under various measurement environments is within a controllable range.(Due to the limitation of the principle of the laser rangefinder,the actual measurement accuracy and the actual measurable distance of all laser rangefinder will be affected by the ambient light intensity and the material of the measured surface.A good rangefinder can reduce the impact of the environment on the one hand,and on the other hand,it can report errors rather than give wrong measurement values.)

　　Does the laser rangefinder have to carry the inspection certificate issued by the National Bureau of Surveying and Mapping?

　　wrong!According to the national requirements,only the measuring instruments produced outside China need to issue an official inspection certificate when they enter China.For the domestic laser rangefinder,the National Bureau of Surveying and Mapping will ensure the production level and accuracy of its laser rangefinder by means of production system acceptance,issuance of production licenses and regular spot checks,and the manufacturer will directly issue a certificate of conformity.In fact,the measuring line of Dayou laser rangefinder is already a G-level testing line.Many foreign brand rangefinders entering China are entrusted by relevant departments to test and issue certificates on Dayou's production line.