719 Photometer

The Weston Model 719 Lightmeter shown here is a Dutch model with a scale in Lux. It was designed for measuring the light levels in workplaces rather than for photographic use. The grey area on the meter face is the photo cell itself.Made in New Jersey around the mid 1950s.    

A variant was also made with a white needle and the scale divided into coloured zones for quick readings.