Damn.. a mistake so soon? It's only September! *g*
I don't remember ever seeing a rule with 10ths.. sort of interesting..
As the ad said, used in the aircraft industry. Many years ago, the major
tool companies started making rules graduated in 50ths and 100ths. These
were specifically aimed at the aircraft and automotive industry due to their
adoption of decimals for greater accuracy. Rules with decimal graduations
were known for many years as "aircraft rules". Starrett still uses that
Look at aircraft blueprints. Over the years, aircraft designers have taken
the "no decimal" approach to ridiculousness. A common designation such as a
1/4-20 tap will be designated as .250-20 on an aircraft print. Instead of
specifying a 3/16 corner round to ease an edge, they will specify .190
radius, just far enough away from .1875 so it won't be equivalent to a
wrote in message
You got me. I can only count to eight so rulers marked accordingly are much
better for me. If it's marked up to sixteenths, then I know it's eighths.
plus one extra line after each eighth. When they go up to ten then eighths
plus two extra is more than my brain can handle. :)
Just like machinist use thousandths, only bigger.
I have a rule that has 10ths and it was made by GEI and a give away from a
machine shop. I never use that scale though, but it also has 1/16th. The
other side is mm and half mm.
These scales are not so bad, what got me a couple of times is when I
inadvertently grabbed a pattern makers shrink rule. To those of you that
have never heard of these, at first glance they look like an ordinary ruler,
but they are calibrated so when the casting cools and shrinks the desired
dimension will be obtained from the oversized pattern.
My personal preference in a steel rule is the one that has 10ths and 50ths
in one side, and 64ths and 32nds on the other.
Sir, first of all, it is a rule not a ruler. A 24" ruler would be
smaller than a midget and be the boss of his own country.
Second, they're not 8ths, but 10ths. Plenty of disciplines use tenths
as a measurment.
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