- 1Hereford Watkins Meter Co., England,
photographic light meter, A4085 - 2Hereford Watkins Meter Co., England,
photographic light meter, A4088 - 3Nuremberg Gossen, Germany,
photographic light meter, A6997/6 - 4Nuremberg Gossen, Germany,
photographic light meter, A12723 - 5Wrexham The Infallible Exposure Meter Co., Wales,
photographic light meter, A12724