Membership of the Gauge & Tool Makers Association 30 April 2015 David We are pleased to announce that we have become members of the Gauge & Tool Maker Association (GTMA). The GTMA are an established UK trade association representing companies throughout the engineering supply chain. The GTMA specialise in working with the manufacturing sectors at OEM/Tier 1 level. In addition they also provide supply chain solutions, technology transfer and industry sector events. We look forward to working with GTMA and it's members in the future.