Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Works well after you replace the batteries

All the batteries supplied with this was too low in charge (it came with a set of spare one and a set installed). It took me a while to figure out why i kept getting inaccurate readings, different even when measuring the same item. After replacing the batteries the measurement readings were much more stable. I compared this to a mm ruler I have and it seemed to be accurate. It measures in millimeters and inches. This is a great unit, for the price it cannot be beat!