PDA

View Full Version : Help with analog dial calliper

Dunc
02-10-2011, 08:33 AM
Was given a Mitutoyo 12 inch dial caliper.
The slide is calibrated in in/cm
The dial, however, is calibrated only in thou of an inch.

Can't understand why only imperial is on the dial.
Is there a way to read the dial in metric?

MichaelP
02-10-2011, 08:53 AM
Is there a way to read the dial in metric?
Easy! Each division will be 0.0254mm :)

Lew Hartswick
02-10-2011, 08:58 AM
Can't understand why only imperial is on the dial.
Is there a way to read the dial in metric? Because you can't divide one rev. of the dial (0.100") by 25.4
evenly.
...lew... (and see above)

J Tiers
02-10-2011, 09:16 AM
Dual dial types have two pointers, with different gearing. both turn together, but at different rates

Toolguy
02-10-2011, 11:37 AM
To go from inch to mm, multiply inches by 25.4.
To go from mm to inch, divide mm by 25.4.

jep24601
02-10-2011, 05:39 PM
40 thou = 1mm is close enough for rough jobs or approximations.

Dunc
02-11-2011, 09:45 AM
title says it all

Hard to read a mfr's mind but it seems silly to add the metric on the blade without following thru. anyway...

MichaelP
02-11-2011, 05:44 PM
It's possible that their idea was to make a universal frame that can be used with different dials (metric, imperial and combo)

metalmagpie
02-11-2011, 06:46 PM
Was given a Mitutoyo 12 inch dial caliper.
The slide is calibrated in in/cm
The dial, however, is calibrated only in thou of an inch.

Can't understand why only imperial is on the dial.
Is there a way to read the dial in metric?

you're kidding, right?

Walter
02-12-2011, 12:24 AM
there is an alternative to Toolguys method.
Inch to metric multiply by 25.4
Metric to Inch multiply by .03937

:D