This Suunto Tandem Clinometer is a reliable tool for measuring slope heights and gradients in the construction and surveying industries. With its accurate measurements, this clinometer is perfect for those in need of precision in their work. The device is made by the trusted brand Suunto and is designed for easy use and durability. Whether you're a professional or a beginner, this clinometer is a great addition to your toolkit. Get accurate measurements every time with the Suunto Tandem Clinometer. Please see pictures for vintage condition. The compass wobbles slightly. There is no bubble level where the ruler is located.