Mahr Federal MarTest 801 Dial Test Indicators Technical Specifications:
Order# Model Measuring Range Dial Style Readings
4308960 801 SM ±.010inch 0-10-0 .0001″
4308970 801 SGM ±.004inch 0-4-0 .0001″
4308985 801 SGE ±.004inch 0-4-0 .00005″