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Spinning space station design

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celticgeek:

--- Quote from: pwhodges on 20 Jan 2012, 01:47 ---How many sliderules have you got?  I can still lay my hands on three.

--- End quote ---

I have two good quality slide rules, and one cheapie plastic circular slide rule.  I am looking for pictures.

pwhodges:
Aristo 0968 Studio
My 10" rule that I bought to be an engineer with (not my own - mine's cleaner than this photo):


Aristo 89 Rietz
A 5" pocket rule I picked up sometime (mine has a leather slipcase):


I can't identify my wife's without going home to look at it.

Skewbrow:
My slide rule is a 10-inch (the length of the scale as opposed to the entire frame, I presume) Japanese make Royal Techlog. My middle school math teacher probably got commissions from whichever company was importing those. It has the same set of scales as your 10-incher. Seems to be in reasonable but not pristine condition. There are some scratches in the sliding window (sorry, don't know what it's called in English) - luckily none too close to the hairline. Also the spring from the other side of the window is missing, but the one on the other side keeps it in the correct position. IIRC we occasionally had to use graphite from pencils as a lubricant, but it seems to be sliding just fine, now.

My Dad has an Aristo, and that's what he used when teaching me :-)

pwhodges:
The sliding window is referred to as the cursor (the running part, from the Latin for run).  More elaborate rules (like mine) have additional hairlines for special purposes.

Border Reiver:
They look like the GFTs I learned to use when firing howitzers back in the 80s. 

{looks around at all the real engineers} I'll go back to lurking in this thread now.

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