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Many many years ago a plumber showed me how he tightens tank-to-bolts in a toilet tank full of water. without getting his hands and arm soaked. He said you always wanted to have one long screwdriver. So I always had a ⅜" x 12" slotted in my toolbox. Overall length about 17". Replaced once under warranty, and I've another in case. A couple of years ago as I downsize, I went to the ⅜" x 8", which fits into my shoulder bag without sticking out. Like to travel light.
They are particularly effective when you want to chip a little concrete or cement from around a pipe in a location obstructed by other pipes; you can reach right through the maze with the 12" shaft and tap-tap-tap with your Estwing to expose the issue.
When filling in at a friend's foreign car shop, he'd occasionally break out a screwdriver which was close to three feet long. More like a lever with a giant screwdriver handle. Impressive.
A Fibonacci gauge
More accurately, a Golden Mean/Golden Ratio gauge.
However, you are correct as well. Taking the Fibonacci sequence of numbers, and dividing any number in the sequence by the next lower number in the sequence does produce the Golden Ratio. At the very low end of the Fibonacci sequence it's close, but as you go higher, the result quickly converges on the Golden Ratio.
all your sig are belong to us
Steady rest. Who made your lathe?
Renishaw. See the probes to the rear also.
Saw a tool for setting saw teeth a week back. It was in perfect condition and worked correctly. Afraid I didnt understand its little numbered wheel with angled flat surfaces around it. Perhaps for setting steeper angles ?
My other Sig is a Steyr...
I remember the days of these
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