Features:* The clamp design allows you to measure length or thickness.* It is used for measuring and writing, especially for kids and office.* Durable use and engraved graduations that will not fade over time. Clear and easy to read.* Completely meet your daily needs. The portable size means it's easy to carry out both indoors and outdoors.* 2-in-1 vernier caliper and pen function. It is safe, non-toxic and harmless, making your work more efficient. Specifications:Material: Plastic Range: 0-100mm Weight: 8G Optional Type: Blue Cartridge, Black CartridgePackage Included:1*Vernier Caliper Note:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.