Review on High Precision Milligram Scale With Calibration Weights - Portable Digital Weighing For Jewelry, Reloading, And Power Components by Jessica Velasquez

scales are quite accurate, but also quite sensitive. this isn't a problem and could be expected.on the other hand.the plastic windshield on it as started to crack and has broken off of the unit. i am not sure why, and am not rough with it. the plastic for the shield seems very low quality, or just very fragile. be careful!i don't know if it is normal for 0.001 scales, but i find it necessary to calibrate them before every use. they don't get used every day, and i don't know how long they sit and need to be calibrated. thankfully they do come with the weight needed to calibrate.in the end, i give it a 4star because of the windshield breaking so easily. only after 3 times of opening and closing it. the unit itself is great.