29-Hole measurements: the sizes of 29-hole drill bit template gauge remain constant to precision accuracy, which are expressed in inches and decimal equivalents, ranging from 1/16 inch to 1/2 inch with white marked fractions and decimals, providing a clear and accurate measurement Sophisticated : adopting machined heavy-duty steel construction and fine ground to tolerances, the drill size gauge allows to quickly and distinguish from drill diameter; The hanging holes on the top and bottom are convenient to hang and save your space Useful and practical equipment: made of stainless steel for sturdiness and reliability, the drill bit sizer helps measure the sizes effectively when using timeworn, and small bits to fit electric drills or manual drills, which is useful equipment in your household toolbox A practical helper for measuring: you will receive 1 piece of black drill thread gauge, which has been clearly with a white scale to high and will not wear out, offering an efficient way to measure drill bits and portable: the drill bits 1/16 to drill bits 1/2 inch gauge is about 6.2 x 2.36 inches, and lightweight to put in your bad for carrying out, which can be applied as a simple ruler to draw straight lines and squares as Material:Stainless steel colour:Black Package Contents: 1 x Drill Bit Gauge Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.