For the home wrencher, not one to use it daily or for a fee, the inexpensive click types are fiarly accurate in the middle range. Using them at extremes is a little spotty. I have owned several of these, and we use them in a 9001 cert plant. I used to supervise the calibration tech, and had all my cheapos checked full range. My suggestion, b e sure you dont use for breaking, or tightening. Just use them for snugging, and relieve the spring daily, never store other than zero settings.