A headlamp tester, also known as headlamp aligner or beam setter, is an instrument to check both the orientation and intensity of a vehicle headlamp beam to ensure that it meets a minimum standard for the country of use of the vehicle. In the United Kingdom, a headlamp beam tester is used to assess the headlight during a MOT test but in order to be used it must be approved as suitable for use in the scheme.
A headlamp tester, also known as headlamp aligner or beam setter, is an instrument to check both the orientation and intensity of a vehicle headlamp beam to ensure that it meets a minimum standard for the country of use of the vehicle. In the United Kingdom, a headlamp beam tester is used to assess the headlight during a MOT test but in order to be used it must be approved as suitable for use in the scheme.
Source: Wikipedia "Headlamp tester" · CC BY-SA 4.0
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