Docooler 100g/ 0.01g Electronic Digital Scale Ashtray Pocket Jewelry Gold Diamond Weighing Carat Balance LCD Display with Blue Backlight Designed like a ashtray. (But do not use it ash tray.) With a movable upper cover, protecting the scale. High-precision strain gauge sensor, reliable to use. LCD display with blue backlight for easy reading. Multiple weighing units for your choice: g, oz, gn, ct, dwt, ozt. Automatic zero tracking.