Determine Chain

If your chainsaw model should not be included in the manufacturer's list, you can determine the measures using the following formula:

Pitch 1/4'' a=12,7mm .325'' a=16,5mm 3/8P'' a=19mm 3/8'' a=19mm .404'' a=20,5mm .300'' a=15mm	Pitch of Your chainsaw: Take the distance from the middle of one riveted bolt to the middle of the next but one and divide the result by two. This is the pitch in millimeters which is internationally stated in inches.
Groove Gauge 1,1 1,3 1,5 1,6	groove gauge: As for 3/8 hobby chains 1.3 mm and less frequent 1.1 mm occur. As for 325 and 3/8, 1.3 mm, 1.5 mm and 1.6 mm occur (1.6 mm for ).
The number of the Drive Links	Drive Links: Please count the number of the drive links on your chain.