For sale is a Mitutoyo 18 in Caliper. I bought it at a liquidation auction of a bankrupt company. I put in a new battery. I tested it by taking a 6 inch block and measuring it with the caliper. It showed 6.0000. I have not performed any additional tests. If you do not like this item for any reason, within 7 days of receipt, you can return it to me for a refund of your winning bid. You will have to pay shipping both ways and pack carefully.