Check the listing for details. Starrett Athol, Ma Double Mechanical In/Out Side Lock Joint Caliper EUC. Condition: Used, Made in United States. Listed at 65.00 USD. Explore the precision of Starrett with this Athol, MA Double Mechanical Inside/Outside Caliper, featuring a convenient lock joint design. Ideal for a variety of measurement tasks, this tool boasts durability and accuracy, making it a staple for both professional and hobbyist metalworkers. Crafted in the United States, the caliper reflects a commitment to quality and craftsmanship. The brand Starrett is synonymous with reliability, and this caliper is no exception. With the ability to measure both inside and outside dimensions, it offers versatility for a wide range of inspection and measurement needs. Whether you're working on intricate jewelry or robust mechanical components, this tool will serve as a indispensable resource in your toolkit. Measures 12-1/4".