How should you measure a file?

How should you measure a file?

• A. Heel to point (excluding the tang)
• B. Tip to tang
• C. Heel to tang
• D. Point to tang

Answer: (A)

When you measure a file, focus on its usable cutting length—the portion that actually engages the material. Measure from the heel, where the cutting begins, to the point, the tip of the file. The tang is not part of the working length; it’s a narrow extension used to attach a handle and doesn’t contribute to cutting. Excluding the tang gives the true working length, which is how you compare sizes and select the right tool. Measuring from tip to tang or from heel to tang would either miss part of the cutting area or include the handle, leading to an inaccurate length.

When you measure a file, focus on its usable cutting length—the portion that actually engages the material. Measure from the heel, where the cutting begins, to the point, the tip of the file. The tang is not part of the working length; it’s a narrow extension used to attach a handle and doesn’t contribute to cutting. Excluding the tang gives the true working length, which is how you compare sizes and select the right tool. Measuring from tip to tang or from heel to tang would either miss part of the cutting area or include the handle, leading to an inaccurate length.