Reading a ruler help, 1.2 or 1.02

[computer-joe]

help! i need some ruler help,

Im making a project on photo shop. I had to measure a paper cover i own


it measures 1.something by 1.something

i need to put that in photoshop, but the problem is i don't know the correct reading.


Would it be 1.02 or 1.20


here is a picture of that

 

[Cannonball]

1.2 and 1.4

 

[Bluejets]

Half way between 1 and 2 would be 1.5 so it follows that 2 units out would be 1.2 and 4 units out would be 1.4.
Merry Christmas

 

[kellys_eye]

 

[hevans1944]

 

[dorke]

Well,
Since you asked,(it is quite obvious to most people),
here is a simple way to deal with these kind of linear scales:

Each CM(biggest bars) is divided into 10 equally spaced smaller bars with one medium sized one in the middle.
It should be interpreted like so:

Each small bar is 1/10 of a CM (0.1CM).
The mid bar is 0.5CM.

That would work for all types of linear scales.

People used to CM scales take that(decimal system 1/10) to be an obvious thing.
When they switch to Inches they have a problem understanding the power of 2 system(1/2,1/4 1/8,1/16 etc.)




Isn't it about time to throw away that ridiculous inch system ?
Who in the world still uses it ,(USA and...)?
Apart from the difficulty of switching ,why ?

 

[Bluejets]

Ah yes, but, it's quicker to say "knock off an extra thou" than it is to say" knock off an extra zero point zero two five millimetres".

Edit: for the machinists out there ....

 

[hevans1944]

When they switch to Inches they have a problem understanding the power of 2 system(1/2,1/4 1/8,1/16 etc.)

Yeah, I have trouble even seeing those itsy bitsy teeny weeny marks on a steel scale that is marked off in 1/64" increments. And it seemingly gets worse when that inch scale is only divided into fifty linear increments instead of sixty-four. I usually keep a set of vernier calipers with a dial indicator or a digital readout handy to verify that I've read the scale correctly.