|The Master III|
The third of the Weston Master series, this meter was produced at Newark NJ and by Sangamo Weston in Enfield, Middlesex in the mid '50s. The UK meters were distributed by Ilford Ltd.
Weston IIIs are probably the oldest of the series that are still in active use.The US model had a stainless steel case much like the model IV. A cine version was also manufactured.
A filter was available to reduce the light intensity when an invercone was used.
The photos above show meter No S2141
The US version