What do slide rules and gunshows have in common?

[Pulp]

My dad told me that the point of a torque wrench wasn't to make sure the fastener was tight, but to make sure it wasn't over-tightened...

And to prevent warping when multiple bolts are used, like fastening an engine head to the block.

 

[Buddhaman]

I have an old K&E slide rule that my grandfather used when he was younger. I don't know how to use it but its neat and the closest thing to a family heirloom I have. It does look cool next to my 1908 engineers level and ~1908 microscope.

 

[opnblstr]

I have several slide rules - kind of a collector. Fav is my Aristo 970 but also like the good American K&E DeciLon and Post Versalog 1460. Have a few Pickett rules like my N4ES but they have too much parallax to read quickly.

For anyone that has one but no idea how it works, the C and D scales are the basic multiply and divide and are the place to start. Multiply is thought of as adding C to D and dividing is subtracting C from D since you are really adding and subtracting logs.

I totally agree that people who originally learned on a slide rule developed an ability to quickly sanity check their results since you have to decide where to put the decimal in any answer so as the other poster said, is it 8.0, 80, or 800?

See: http://www.hpmuseum.org/srinst.htm

 

[10Seconds]

Hmm... I though most of you guys here did not think we went to the moon in the first place if I remember the other moon thread. LOL!

I never used a slide rule for school, but I did use the flight computer when learning to fly.