We’ve been here before too: guessing the bit size on a shaft that has long-since lost any sign of marking, squinting, staring, using colorful language. But the 14-Size Drill Gauge lets you quickly and conveniently determine the size of a fractional drill bit. The durable, stainless steel gauge measures drill bits from 1/16” to ½” by 64ths. All sizes are all permanently etched into the gauge and show the decimal equivalents to make your work fast and foul word free.