| Avo Exposure Meter Model B|
image by Anssi Puisto (Image rights)
AVO Ltd. is a electronic measuring instruments company who made photo-electric light meters for photography from around 1935, among many other products. The name is said to be an acronym from Amps, Volts and Ohms - measured by their multimeters, but the company had previously been called the Automatic Coil Winder And Electrical Equipment Company Limited, or ACWEECO for short.
| Avo Exposure Meter Model 1, Avo Exposure Meter|
images by Anssi Puisto (Image rights)