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== Mechanically difference to 545 == | == Mechanically difference to 545 == | ||
The transformer is potted. | |||
Unlike Tektronix instruments of the same era, which require | |||
because the | silver-bearing solder, ordinary solder is fine for working on the Lavoie. | ||
This is because the terminal strips in the Lavoie have tin-plated steel inserts. | |||