# inches are divided in....

Discussion in 'Spanish-English Vocabulary / Vocabulario Español-Inglés' started by Yuribear, Jan 11, 2007.

1. ### YuribearSenior Member

California
Español, Mex-USA
Hi, can somebody tell me how the inch is divided? I mean I know there are 12 inches to a foot, but how many ????? are there in an inch? There must be some kind of measurement, like there are 10 milimetres in 1 cm.

Is there something bigger than a micro-inch (equivalent 1 000 000 per inch)?

2. ### jabogitluSenior Member

USA-English
Inches are divided into 1/8 of an inch ("eighths of an inch")

Eighths are divided into sixteenths of an inch (1/16).

3. ### PliscapoivreSenior Member

Deutschland
English, US
I agree with jabogitlu -- I don't know of any smaller division than the inch except divisions of the inch -- o sea, no hay algun otro nombre, nada mas fracciones del inch.

saludos --

4. ### YuribearSenior Member

California
Español, Mex-USA
Thanks jabogitlu. Do the 1/8's have a name or are they just called "eighths of an inch"?

Another question... how do you write an inch & a half? 1.4 inches???

5. ### jabogitluSenior Member

USA-English
As far as I know they're just called "eighths of an inch" - i.e. "The plank is six -eighths of an inch wide"

But just as I made this post, I recalled that inches are also divided into "quarters" - (1/4). Three quarters of an inch.

Feet, Inches, Half an Inch (1/2), Quarters of an Inch, Eighths of an Inch, Sixteenths of an Inch. Logically, it could continue thirty-secondths (1/32) of an inch, sixty-fourths (1/64) of an inch, but no one ever uses these as there's no reason to be that specific.

So, sorry about forgetting the 1/4's.

An inch and a half? 1.5 inches or 1 1/2 inches.

6. ### YuribearSenior Member

California
Español, Mex-USA
Thanks so much Jabogitlu for the info. It is confusing when your brain works in the metric system.

7. ### abeltioSenior Member

Spanish, Argentina
In machining and mechanical applications we normally use: thousands of an inch (0.001") for example when aligning machinery.

So, there are two types of inch subdivision: power of 1/2
1/2, (1/2)^2= 1/4, (1/2)^3= 1/8, (1/2)^4= 1/16, 1/32, 1/64
usually used on rulers and measuring tapes.
Sizes in 1/64th of an inch is used in many mechanical applications like wire gage and small screw and nuts.

And the decimal subdivision... mostly used in mechanical measuring equipment and applications like calipers or vernier, micrometers, feeler gages and machine alignment, clearances, etc.
The most used unit is: 0.001in (a "thou")

So... if with a ruler we measure 1"1/8, with a micrometer we would measure: 1.125 in

cheers.