He is an absolute buy recommendation for the occasional hobby use at the 1 or 2 family cars. It is not intended for continuous use in the workshop, and hopefully expect at this price no one.
It is important that you observe the torque setting on the handle turns back completely to 0 after use and thereby relaxes the mechanics. Not doing so, droning over time during storage, the spring and the accuracy is lost. Then the key is no longer usable.
That applies to each torque wrench so and is also expressly mentioned in the instructions.