Easy-to-read Accurate Instrument Offers Versatility For Measuring Large And Small Joints Features Includes: 4x Magnifying Lens To Read The Dual 180 Degree High Resolution Scale And 2 Stainless Steel Arms Extending 9 To 26 Constructed Of Chromium-plated Brass 360 Degree Arm Rotation (both Directions) Resistance Swivel Compact Lightweight And Portable Smooth Precision Glide Total Extended Length: 22 1/4 Shipping Carton Size: 9 L X 7 W X 5 H