- Balanced numbering
- Plus on left, minus on right
- Fixed center dial
- ADG size 2
- For bore/ID gages
The letter designating the dial format follows the indicator part number.
For example:
- 2I50-01B for 2I50-01 indicator with B format dial face
- 2DM100-01G for 2DM100-01 indicator with G format dial face