Meter; photoelectric; two range; ASA calibration 1-650; detatchable incident light screen; in moulded rubber-like ERC. Avo Universal Exposure Meter
Photoelectric exposure meter of single range. With calculating ring, bearing aperture (f1-32) and H & D 200-5000 scales coupled to moving pointer, for alignment with meter needle. Exposure time scale 60 secs - 1/2000 sec. Prov. Patent. The Automatic Coil Winding and Electrical Equipment Co. Ltd. Avo exposure meter