1) Cut-out for checking depth gauge setting
2) Sighting edge for filing angle
3) Bar groove cleaner and scale for measuring groove depth
4) Sighting edge for side plate angle
STIHL offers filing gauges for checking the depth gauge settings and tooth angles. Choose the filing gauge that matches the chain pitch and you can then check all necessary angles and dimensions.
The filing gauge greatly simplifies the process of checking and lowering the depth gauges.
11108934000 (1/4, 3/8P, .325, 3/8)
11068934000 (.404", 1/2")