ruler types

[Kevin54]

A "rule" is something you follow. A "scale" is something you weigh yourself on. Now a "steel rule" is something you follow for measurements. And if you do a search for "steel scale" and then read the description, it most likely will say "steel rule".

And when measuring anything, I always use a rule for reference only. Precision machining uses micrometers, and at the least a vernier if you don't have mics large enough.

 

[eyeball]

I think Starrett has far more credibility on this than Wikipedia.

How many measuring device patents do you think Wikipedia has?

Point made.

Agreed, Starrett has been at it a lot longer than Wikipedia. If Starrett is comfortable calling them rules so am I.

Fun fact: Teachers at my kids high school do not find Wikipedia to be a reliable source of information. Some teachers simply say no quoting Wikipedia.

If you have not checked it out, do a little reading about how those pages are created. It might make a guy think twice about forming too many opinions based on those pages.

 

[ttpete]

Agreed, Starrett has been at it a lot longer than Wikipedia. If Starrett is comfortable calling them rules so am I.

Fun fact: Teachers at my kids' high school do not find Wikipedia to be a reliable source of information. Some teachers simply say no quoting Wikipedia.

If you have not checked it out, do a little reading about how those pages are created. It might make a guy think twice about forming too many opinions based on those pages.

I understand. However, I find that the endnotes are useful in doing further research on the subject.

 

[tymbo]

Architectural scale

 

[PelicanPines]

Back in my day...

8 bits in a byte... half a byte is a nibble... 4 bytes is a word...

In school... we had a teacher that thought the Earth might be flat... he probably had PVC air lines and thought jet planes didn't need fuel to fly...

 

[lardy1]

 

[BTL-A4]

I found some of what I was looking for on Wikipedia. Yes, I'm aware that is is not considered an "official" source by schools, but is often a good starting point, and the citations at the end are often useful.

It lists everything except 8, and 13-15. Again, anyone know how the numbering system works and what the missing numbers might represent? That's what I'm interested in finding out.

The Federal Specs (at the bottom of the wikipedia article) call them "Rules", by the way.

I can type in various combinations of "metal ruler", "machinists's ruler" or "scale" and "rule" and get info for all kinds of measuring devices, including what I'm looking for and what most people mean when they are referring to machinist's rules, so the semantics of what to call it seem not not mater all that much.

Hope you all are having a swell and groovy Christmas!

 

[BajaScout]

There is the CH ruler sold by someone here, has a different scale.

 

[pstemari]

...It lists everything except 8, and 13-15. Again, anyone know how the numbering system works and what the missing numbers might represent? That's what I'm interested in finding out...

Are the numbers the same between manufacturers? I find that a bit surprising.

At any rate, I don't think there's any significance to the numbers at all. They're just arbitrary, the same as Jacob Taper sizes: JT0, JT1, JT2, JT3, JT33, JT6, JT4, and JT5 (in order by size).

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