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This is a lab tool used to measure the beam pattern of automotive lighting. It’s how you test for DOT compliance, and we can also take a full measurement of the beam pattern to see how much light shines to the road. Here’s a comparison of the low beam headlight options. This is a top-...Read more »
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Here I ‘d like to post a UK native who talked about the E-MARK , very interesting and informative： E marks on lights. Whats that all about then? I can give you the short potted version that you need to know, followed by the longer version for those with a high boredom threshold. The “E” mean...Read more »
