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Testo 540 Pocket Sized Light Intensity Lux Meter , Measuring 0 to 99999 Lux, Including protection cap, batteries and calibration protocol
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KOCAN Light Meter, Digital Illuminance Light Meter Manual Range 200 to 200,000 Lux LCD Photometer Portable Handheld Luxmeter with Peak Measurement Light Intensity Tester for Industrial Lab Plants : Amazon.co.uk: Business, Industry
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