Constructed From Durable & Lightweight Metal Alloy, Our Mini Vernier Caliper Keyring Chain Features a Measuring Capacity of Up to 1.57 Inches. Its Compact Design Doesnt Fully Extend, Setting the Actual Maximum Measurement at Approximately 1.30 Inches. Designed for Precision, Its Perfect for Measuring Small Items & Jewels, Making It an Indispensable Tool to Carry with Your Keys. Known for Its Robustness & Functionality, This Keyring Chain Withstands Corrosion, Wear, & Tear, Maintaining Its Appearance Without Fading. the Bright Electroplated Finish Enhances Visibility of the Measurements, Making It Easy to Use as a Handy Ruler. Adjustments Are Made Simple with a Screw for Smooth Sliding Action. Transforming From a Mere Measurement Tool to a Distinctive Promotional Product, Personalize the Mini Vernier Caliper Keyring Chain with Your Brands Logo. This Unique Gift Will Surely be Appreciated by Employees & Customers Alike, Serving as a Fashionable & Practical Accessory. Minimum Quantity: 100