Slide - BTPS - working on the isolating transformer - set of 2, David Frost, 1/1974

Historical information

Set of 2 colour slides of Frank Hanrahan working on the isolating transformer at the front of No. 1 road with tram 14 behind. Photos by David Frost Jan. 1974

Significance

Yields information about the rewinding the isolating transformer for the BTPS power supply.

Physical description

Colour Slide - Kodak cardboard mounts - set of 2

Inscriptions & markings

In ink "Frank Hanrahan working on transformer" and "Preparations for transformer installation"

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