Arthur James Dalladay was born in December 1894 in West Ham in Essex in England.
[1] He built the very first photographic spot meter in about 1935; he described it in the BJP Almanac of 1937 on pages 127-138.
This meter still exists, in the possession of a subsequent editor of the Journal.
Within a decade or so, there appeared two commercial meters based on the same principle.
This biographical article about a print editor is a stub.