Carson LED Lighted LinenTest 11.5X Focusing Loupe Magnifiers for Stitch and Thread Counting and Measuring Small Parts (LT-10, LT-10MU) Compact, folding Linen Test magnifier with hard plastic storage case 11.5x power, 15mm lens Focus wheel for fine adjustment | Product Dimensions (LxWxH): 1.5 inch x 1.5 inch x 0.75 inch Perfect for stitch counting, small parts measuring Super bright LED light illuminates the object using 3 button cell batteries (included)