The Cyclus Tools spoke ruler allows you to precisely determine the length and diameter of your spokes in millimetres or inches. Additional holes of 1/8" to 1/4" help you measure ball bearing sizes. Therefore, this spoke ruler is suitable for both pros and hobby mechanics.
• Spoke ruler to determine spoke diameter and length
• Measurements in millimetres and inches
• 1/8" to 1/4" holes to determine ball bearing sizes