Choosing the best 2900 Indicator
The number of options in the Starrett 2900 indicator range means there is an exact right fit for your application. Finding that tool can sometimes be a challenge. This is a guide that will allow you to make a series of simple decisions to arrive at the 2900 model that is ideal for your needs.
You first choice is one measurement system and stem / thread sizes. Please choose from one of the options below.
English Only
Models feature a .375" stem and #4-48 Thread. Capable English/Metric conversion Best choice when all or most measuring tasks are English, and/or fixturing requires .375" stem
English and Metric
Models feature an 8mm stem and M2.5 x 0.45 Thread. Capable of English/Metric conversion. Fixturing requires 8mm stem, English and Metric capability important.
Metric Only
Models feature an 8mm stem and M2.5 x 0.45 Thread. No English/Metric conversion capability. Easier to use when no imperial measurements are needed.