1000mm Slide Caliper Help?

[andy_con]

ive just aquired one of these for free but i dont know how to use it properly.

http://www.ebay.co.uk/itm/Extra-Larg...item5ae57b19bf

http://www.ebay.co.uk/itm/40-1000MM-...item4d0009022f

im assuming it can measure 0.01mm?

ive done a google search but all i get is info on digital versions. can anyone offer any help?

[kitatit]

Hi Andy,

Woah! Mega.

OK, measure something and you can see the mm on the main mm divisions. Say 345mm. Next you look at the divisions on the sliding section. Usually they are marked 1-9 or 1-10 can't remember ATM. Look at which line lines up the most with the divisions on the non sliding side. If it lines up closest with the 7 mark it is 345.70mm

pretty sure it's resolution is 0.1mm but it might have more smaller divisions marked as well.

If this is the case, you know it is 345.7?mm. Now look at the smaller divisions and you will then know the last digit.

Hope this helps.

Kit

[andy_con]

will check it out when i get homt thanks

[LaNeK779]

excellent!! thanks kit

i also found this, to visualise it a bit

http://hyperphysics.phy-astr.gsu.edu...b/vernier.html

[kitatit]

Hey Chris,
Nice link. That's a great explanation.

Kit

[andy_con]

umm not sure i understand

[Badpip]

Look at the zero first - it's at about 19.5cm

Then find the number that lines up with the scale - looks like 2 to me, so 19.52cm

/Thomas

[andy_con]

number that lines up with the scale? i just dont get it lol

sorry

[kitatit]

HaHa yes it's a bit mind bending at first. Try to think of it as the same way you read an analog clock.

First you look at the small hand to see which hour it's closest to, or "lines up with", then big hand to see which minute it's closest to then second hand.

the image is too pixilated when zoomed up to accuratly tell the last digit, but this is how i read it...

Good luck
Kit

[loopee]

Hey Kit

I'm getting a little concerned about your browsing habbits mate