Administrative record - AHQ Survey Regiment - Tests on stability of duplicate Aerial Photography negatives 1959, AHQ Survey Regiment, 8 Dec 1959

Historical information

Tests on the stability of Duplicated Aerial Photography negatives. Tests were carried out using 3 x units of 2 x models from both original and duplicate films. These were all brought to a scale of 1;25,000 and horizontalized on common points and approximately 250 spot heights read on each unit.

Physical description

1 x A4 poorly photocopied Report. Typed text and incomplete

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