Welcome

July 8th, 2025

Dear valued customers, partners, and suppliers:

Thank you for the trust you have placed in us for the past 49 years. Your loyalty is something we never take for granted and we appreciate each one of you. The time has come, however, to share with you several . important updates. The following will strengthen our ability to serve you and expand the technical resources you rely on.

Effective July 8, 2025, Techmaster Electronics has acquired Rothe San Antonio Calibration, L.L.C. (RSAC). Techmaster will continue operating with the same excellence and service that RSAC has provided to you in the past with expanded offerings and capabilities. All quotes, work orders, points of contact, and service schedules remain in force; your day-to-day experience should be seamless with telephone numbers, location, and technical personnel staying the same.

This transaction broadens and significantly expands the capability to deliver industry-leading calibration, testing, and metrology services.

With Techmaster, you will see expanded capabilities in RF and microwave calibration, environmental testing, high-voltage DC verification, dimensional metrology—all under one ISO/IEC 17025-accredited quality system. Techmaster will provide expansive pick-up/delivery, and issue tamper-proof digital certificates 24/7. The excellent metrology customer service Techmaster provides and their robust customer portal will ensure you have the best service possible in the industry.

To learn more about Techmaster Electronics, please follow the link below to their website.