digital before electronics

Jim in rush co · Mar 27, 2018

Had these old mics for years

rustyfarmall · Mar 27, 2018

Accurate to the Nth degree and the battery never went dead.

David G · Mar 27, 2018

I just have trouble reading them anymore.

JGayman · Mar 27, 2018

> I just have trouble reading them anymore.

I'm the same way. I mean, I know how they work but I just always have trouble getting the reading. I think it is because the scale covers up the markings as you approach the reading instead of revealing them. Obviously this is just a bone head problem on my part as folks have been using micrometers forever.

sotxbill · Mar 27, 2018

In college, we HAD to use a slide rule in the electronics program. AND,, we could do anything from simple to going to the moon with it,, as long as you could tolerate the minor error factor. I pulled one out the other day, and could not make heads or tales out of it... Its a mystery 45 years later. I cant remember for sure the "reverse polish notation" that our first scientific calculators used. Now wheres that dang battery for the mic?

SVcummins · Mar 27, 2018

I had a harbor freight like that wish I could find another one like it

Eagle Beagle · Mar 28, 2018

RPN notation spoken here! Hewlett-Packard HP 32E has been working well for over 40 years for me.

Beagle

coshoo · Mar 28, 2018

I've got a Harbor Freight digital caliper, and it works great, but has no on/off switch. It turns off if you dial it down to zero, but even when locked in place, the slightest jar gets it off zero, display comes on, and the next time you need it, battery is dead. So I take the battery out after each use, which is easy enough, but you would think they could have told the Chinese factory to put a switch in it.

Dune Country · Mar 28, 2018

I just packed up a whole set of those, 0-1 thru 5-6
prolly never use them, were my dad's

RayP(MI) · Mar 28, 2018

Have used a rpn calculator for so long that I have trouble using a conventional calculator. I would not have gotten through college or high school without a slide rule. That said, guess what my degree is in. Current calculator is a HP 50g.

SVcummins · Mar 29, 2018

My micrometer was like the one in the picture no batteries it just had a digits that turned manually

sotxbill · Mar 29, 2018

(quoted from post at 09:32:25 03/28/18) RPN notation spoken here! Hewlett-Packard HP 32E has been working well for over 40 years for me.

Beagle

the first hp 45 was around $2400 when it came out.. the hp35 was much cheaper, I paid around $700 for it when i was doing simiconductor design. iirc. Still have it in a box in the attic somewhere.

Oliver 500 Wa · Mar 29, 2018

My micrometer was like the one in the picture no batteries it just had a digits that turned manually

Mitutoyo made some like that. They worked kind of like the odometer in an older car.

fixt · Mar 30, 2018

You might try a Brown and Sharpe Slant Line micrometer.
Brown and Sharpe is good stuff. Aside, I lost or misplaced my B&S thread pitch gauge and am trying to find another on the Eplace.
I'm having to make do with a Starrett which is an ok gauge.

I have a few of those, but mainly I use an Etalon set. When I calibrate them with gauge blocks I set them so half of the line is shown. They are a little different in reading tenths so you have to get used to them.

digital before electronics

Jim in rush co

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rustyfarmall

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David G

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JGayman

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sotxbill

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SVcummins

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Eagle Beagle

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coshoo

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Dune Country

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RayP(MI)

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SVcummins

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sotxbill

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Oliver 500 Wa

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fixt

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