Description: 【Versatile Use】: This tablet holder with carbon fiber rod and clamp is ideal for the surveying and measurement industry. It can be used as a handheld notebook stand for outdoor geographical measurements, supporting open data collectors with clamp. 【Adjustable Size】: The rod clamp compass size ranges from 11mm to 35mm in diameter (center), making it adaptable to various rods. 【Tablet Clamp Size】: The tablet clamp size ranges from 97mm to 145mm in diameter (center), ensuring compatibility with a wide range of tablet. 【Material】: Made of sturdy PP and metal, this product is designed to withstand the rigors of fieldwork, providing long time to use durability and reliability. 【Wide Compatibility】This desktop notebook stand is reliable, versatile, can be widely used for home and office. Adjustable design makes it accommodates laptops, notebooks, pc gaming laptops, tablet, phones and other devices. Specification: Material: PP Metal Size Chart: Rod Clip: 1.1cm-3.5cm/0.43inch-1.38inch Tablet Clip: 9.7cm-0cm-14.5cm/3.82inch-5.71inch Package Includes: 1 Notebook Handbook Flat Bracket With Clamp Note: Please allow slightly errors 1-2cm differences due to manual measurement.