What is the gauge of the Common Chain listed for wildland use?

• A. 0.043 gauge
• B. 0.050 gauge
• C. 0.058 gauge
• D. 0.063 gauge

Answer: (B)

Gauge is the thickness of the drive links in a chainsaw chain, and it has to fit the bar groove exactly so the chain runs smoothly. For wildland use, the Common Chain is specified at 0.050 inch gauge. This size strikes a practical balance: it’s strong enough to handle brush, small trees, and rough terrain, yet light enough to keep the saw and bar agile in field conditions.

Smaller gauges, like 0.043, are lighter and can cut faster but wear more quickly and may be less durable for rugged wildland work. Larger gauges, such as 0.058 or 0.063, are tougher and longer-lasting but require more power and can be harder to fuel and maintain in the field. So 0.050 inch is the standard because it provides reliable performance across typical wildland tasks without overburdening the equipment.