Victorian Telecommunications Museum

[1] It housed historical telecommunications equipment that had been used by what originally was called the Postmaster-General's Department.

The visitor watched the exchange manually step up and click around as the numbers are dialled.

The exhibits included one of the original mechanical speaking clocks, made with rotating glass discs.

The discs were originally read using an exciter and a detector made with valve technology.

This development has enabled the speaking clock to be restored to full operation.