The Baseline Hi Res Hydraulic Hand Dynamometer has an extra large dial and larger strength range of 136kg (300lbs). The Baseline Hi Res Hydraulic Hand Dynamometer is used to measure hand and grip strength as well as evaluate hand injuries and rehabilitation therapy. The Baseline Hi Res Hydraulic Hand Dynamometer is durable, light weight and sturdy (Made in USA). It also provides accurate and repeatable results with it's 5 position adjustable handle and easy to read analogue gauge with both lbs and kgs.