About this item High Accuracy – Imperial scale (1/4″ x 80″) is perfect for accurate measurement.Diameter measurement range is 25 inch,suitable for measuring the diameter of most things Outside Diameter Tape Measure – Pocket-sized, flexible, and retractable steel tape measure with both diameter (OD measurement) and standard integer measurements. Portable Design – The mini size tape measure can be easily carried on waist or in your pocket. Make Measuring Easy – Standard, consecutive inches on top-side to 1/16 inches; diameter measurements on underside to 1/100th inches. Perfect for measuring trees, branches, or pipe fitting. Easy to Read – Thanks to the Bold & Large Numbers and Hard-Wearing quality, it makes the ruler have better reading performance and longer life.