question about inches

Post by **Holt** » Tue Jun 10, 2008 8:17 pm

hi.I just need some quick info on inches.

I am used to cm and not inches.

how much is

1 1.2'' in cm and 1 1.8'' in cm

thank you
Holt

scot2525 · Post by **scot2525** » Tue Jun 10, 2008 8:27 pm

2.2 cm = 1 inch.

protokev · Post by **protokev** » Tue Jun 10, 2008 8:28 pm

nope, 2.54 cm per in

Jonathan Jones · Post by **Jonathan Jones** » Tue Jun 10, 2008 9:01 pm

Here is a link the OP may find very valuable:

http://www.manuelsweb.com/in_cm.htm

My Best,

Jonathan

Post by **Holt** » Tue Jun 10, 2008 9:05 pm

ok thanks but what does 1 1.2'' mean?

I know that 1'' is 2.5cm but the 1.2''? and 1.8''?

thanks
Holt

Castor Dioscuri · Post by **Castor Dioscuri** » Tue Jun 10, 2008 9:09 pm

My guess is that 1.2 means 1/2, and 1.8 means 1/8...

Terrasolo · Post by **Terrasolo** » Tue Jun 10, 2008 9:10 pm

I assume that they mean 1 and a half inches, or 1 and 1 eight inch.

so with that i did my conversion and came up with this:

1 1.2 inches ( or 1.5 inches) = 3.81 cm

1 1.8 inches (or 1.125 inches) = 2.8575 cm

Hope I did that right, if not I'm sure someone else will chime in.

Post by **Holt** » Tue Jun 10, 2008 9:29 pm

thanks.

can someone confirm that this is right?

that 1 1.2'' is 1.5''?

thanks
Holt

Jonathan Jones · Post by **Jonathan Jones** » Tue Jun 10, 2008 9:43 pm

Pretty sure that is correct.

IndianaGear Hunter · Post by **IndianaGear Hunter** » Tue Jun 10, 2008 10:14 pm

Confirmed as correct

Indiana G · Post by **Indiana G** » Wed Jun 11, 2008 12:58 pm

Indiana Holt wrote:thanks.

can someone confirm that this is right?

that 1 1.2'' is 1.5''?

thanks
Holt

who wrote 1.5" as 1 1.2"? that doesn't even make sense. is that derived from a specific industry or specific application or specific treatment? as an engineer, i have never seen that represented in that manner. 3/2" would make more sense to me but then again representing a measurement in that manner clouds the issue. there is too much ambiguity to represent a measurement in that manner....it can be misconstrued as 11.2 (eleven point two) inches or 1 1.2" (one and one point two) inches. now i'm confused and need to take some meds

Castor Dioscuri · Post by **Castor Dioscuri** » Wed Jun 11, 2008 1:06 pm

Indiana G wrote:
Indiana Holt wrote:thanks.

can someone confirm that this is right?

that 1 1.2'' is 1.5''?

thanks
Holt
who wrote 1.5" as 1 1.2"? that doesn't even make sense. is that derived from a specific industry or specific application or specific treatment? as an engineer, i have never seen that represented in that manner. 3/2" would make more sense to me but then again representing a measurement in that manner clouds the issue. there is too much ambiguity to represent a measurement in that manner....it can be misconstrued as 11.2 (eleven point two) inches or 1 1.2" (one and one point two) inches. now i'm confused and need to take some meds

All I gotta say is that this is the reason I never liked math!

TheMechanic · Post by **TheMechanic** » Wed Jun 11, 2008 4:43 pm

Since every little line equals 1/16" I'm assuming that the ".2" is 2 of these lines, meaning 1/8". Maybe he's reading the ruler like it's in metric, where the .2 would be 2mm. Therefore .5" would equal 8/16 (1/2). It starts getting weird when you convert fractions of an inch to decimals.

Indiana G · Post by **Indiana G** » Wed Jun 11, 2008 5:00 pm

they are doing it WRONG....there are standards here, rules to play by and a set of facts that everyone adheres to.........1 + 1 is 2, water is wet at room temperature, alden boots aren't the right colour, the belstaff indy is a rip off, and so on and so on.....you can't just adjust things to your liking and expect everyone to understand!!!......and the there was no grey hat in raiders {jumps under the plymouth}

uh oh...see....now i think i went too far.........

Rambler · Post by **Rambler** » Thu Jun 12, 2008 3:32 pm

Indiana G (I am an engineer too btw) is right, that does not conform to any standard US method of writing inches in either decimal or fractional form. I hope this is not for something critical (like a Mars lander) or it could produce a costly error.
The substitution of a period for a slash (which would mean it was "one and one half inches" ) is all that makes any sense whatsoever.
Holt, please tell us, so that we might better figure this out, what does this refer to?

Regards,
Rambler

Indiana G · Post by **Indiana G** » Thu Jun 12, 2008 4:42 pm

Rambler wrote:Indiana G (I am an engineer too btw) is right, that does not conform to any standard US method of writing inches in either decimal or fractional form. I hope this is not for something critical (like a Mars lander) or it could produce a costly error.
The substitution of a period for a slash (which would mean it was "one and one half inches" ) is all that makes any sense whatsoever.
Holt, please tell us, so that we might better figure this out, what does this refer to?

Regards,
Rambler

yeah holt....let us know so rambler and i can go over there and beat on the person with our slide-rules.........then we can sit and read 'dilbert' together and have a nice indygear mini-summit

Mannie Bothans · Post by **Mannie Bothans** » Thu Jun 12, 2008 5:03 pm

Indiana G wrote:yeah holt....let us know so rambler and i can go over there and beat on the person with our slide-rules

Woah, settle down guys. The truth is, four out of every three Americans have difficulty with fractions.

{edit-- Sorry folks, I'm not intending to bait anyone here... I just saw that on a bumper sticker today and I thought it was incredibly appropriate for this thread.}

Mannie Bothans, (proud citizen of the good ole U.S. of A.)

Post by **Michaelson** » Thu Jun 12, 2008 5:10 pm

Hey, proof of point.....one of our main U. S. banks is call "Fifth 3rd" Bank.

Why they don't call it "1 and 2/3rd's" bank, I'll never know.

Regards! Michaelson

Rambler · Post by **Rambler** » Sat Jun 14, 2008 7:09 am

Indiana G wrote:
Rambler wrote:Indiana G (I am an engineer too btw) is right, that does not conform to any standard US method of writing inches in either decimal or fractional form. I hope this is not for something critical (like a Mars lander) or it could produce a costly error.
The substitution of a period for a slash (which would mean it was "one and one half inches" ) is all that makes any sense whatsoever.
Holt, please tell us, so that we might better figure this out, what does this refer to?

Regards,
Rambler
yeah holt....let us know so rambler and i can go over there and beat on the person with our slide-rules.........then we can sit and read 'dilbert' together and have a nice indygear mini-summit

Hey, at least my slide-rule is 1936 period correct!
only kidding a little...I have some of my fathers and grandfathers drafting tools etc. The gadgets from the Indy era are quite cool and totally unlike their modern counterparts in quality.
I need to get a flatbed scanner so that I can pull some photos from my grandfathers college yearbooks to show the clothing styles. They are in the just pre WWI time-frame, i.e. Henry sr. and young Indy.