Determination of coincidence degree and flatness value

The JJG117-91 flat panel verification procedure stipulates that when determining the flatness error value, it is necessary to consider the degree of coincidence of the repeating verification point flatness. This is of great significance for finding the gross error of the verification data, correctly judging the reliability of the verification result, and improving the quality of the plate verification. In the current actual verification work, some conceptually incorrect understanding and wrong practices hinder the implementation of the verification procedures, so it is necessary to emphasize the correct calculation of the degree of coincidence and flatness.

Flood Light

1. Compact square form-factor outdoor high-power floodlight and Wall Washer for architectural and landscape lightings.
2. Cree or Lumileds LEDs in wide ranges of whites, tunable whites, mono colour,RGB, RGB+W and wide to narrow (3°) beam angles.
3. High brightness contrast level for smooth and consistent color change effect.
4. Extruded aluminum alloy body with high efficient heat dissipation fins, protective vent and clear glass diffuser.
5. Easy and flexible installation with adjustable 60° tit and rotatable mounting base.
6. AC110~220V or DC24V input voltage, Integrated AC power driver. DMX control with auto addressing function.
7. Rated IP 66

Flood Light,LED Flood Light,Architecture Flood Light,High Power Flood Light,Addressable Flood Light,Anti-clare LED Flood Lights,Narrow Beam Angle Flood Light

StrongLED Lighting Systems (Suzhou) Co., Ltd. , https://www.strongledcn.com