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What's the average aperture these days?
G'day All,
The boss and I were discussing mirror sizes the other day and he was telling me stories about grinding his own 6" when he was a kid. The question came up: What is the average size of aperture these days? Back in the 60's a 6" was the norm or maybe an 8" and there was only one 12" in Queensland and the Bundaberg 19" was colossal beyond belief (or so the boss claims).
Peter.
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