It's a very simple design, pretty conventional, no current limiting only fuses.
The switches are high quality items, silver contacts, 36(?) way with a 12 position cam fitted, giving 3 contact gaps between ways.
I attached a general arrangement for interest, drawn from memory.
Andy, these Tek transformers make super power supplies as they have several ht and lt windings and seem to be well rated, around 750 VA I think. You could (those of a nervous disposition look away now) always remove the p/s section from your spare 545 and you have a very useful ready made bench supply.
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