The first photogrammetric plotter model A1 was produced by Wild. That was way back in 1922. The A in A1 is stand for Autograph. Only three units of A1 were produced as prototype version. Then A1 was followed by A2 introduced in 1926. Production of A2 went on for fifteen years until 1941 with twenty-two units were marketed.
A1 (source – wild)
Wild Autograph A2 (1926)
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