Acquired in November 2022 Caliper ADA instruments Mechanic 150 Pro. When working, he began to blink, looked at the instructions - a weak battery. I bought a new battery, began to change it - at first it blinked the same way, and then it stopped showing the value altogether. I rearranged the old battery - the same thing, measured the voltage: the old one - 1.2V, the new one - 1.5V. I contacted the official service center on the website, two service centers prompted me (I live in St. Petersburg). In one center (which is on 5A Moldagulova Street, it was closer for me to go there), they told me that you must bring a receipt for the purchase, we can take it if all the documents are correctly executed - two weeks is the average repair period. In another center (which is on Latyshskie Strelkov, 1) they told me - come the master will look. I arrived, everything was fixed for me in five minutes - the master said that it was necessary to put the battery at an angle so that the contacts would not be bent (having tilted the battery on the dial).