Watkens Bee exposure meter (1903)

Descripción
Watkens Bee exposure meter (1903)
Luxómetro/fotómetro - Buena

38) Watkins Bee exposure meter (1903) Without accessories. This was the first light meter to measure the relative intensity of light through Watkins' invention of the actinometer and it allowed a numerical value to be assigned to light. The Bee Meter was a pocket calculator (like a pocket watch) for determining exposure, so-called because it was small and highly efficient. It was manufactured in Hereford, in a building known as The Meter Works.

Detalles del lote
Marca
Watkens
Modelo/tipo nº
Bee exposure meter (1903)
Tipo de objeto/dispositivo
Luxómetro/fotómetro
Estado
Buena
Se ha comprobado y funciona
Tested and working
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