02-15-2016, 11:17 PM
GENERALLY.... Dial test indicators (DTI) are smaller in size and have a very limited range of measurement. But they have very fine graduations so they are used for very fine measurements, sometimes down to .0001 inches. (One ten-thousands of an inch.)
Dial indicators (DI) are usually larger in size and can have a much longer range of movement. An indicator with a one inch range is probably the most common one found. You can get one with a two inch range as well for example. And they are usually graduated in .001 inch increments. I'm sure you can find dozens of both types in different sizes and ranges & graduations as well.
![[Image: 250x226xdial-test-indicators.jpg.pagespe...ee1M3e.jpg]](http://www.table-saw-guide.com/image-files/250x226xdial-test-indicators.jpg.pagespeed.ic.ZFu1ee1M3e.jpg)
![[Image: POW151102_600_1.jpg]](http://www.powerhouseproducts.com/media/catalog/product/cache/2/image/9df78eab33525d08d6e5fb8d27136e95/P/O/POW151102_600_1.jpg)
Dial indicators (DI) are usually larger in size and can have a much longer range of movement. An indicator with a one inch range is probably the most common one found. You can get one with a two inch range as well for example. And they are usually graduated in .001 inch increments. I'm sure you can find dozens of both types in different sizes and ranges & graduations as well.
Willie