In this episode, Ryan and Henry welcome Paul Depmore for an in-depth discussion tracing his path from the U.S. Marine Corps into commercial and national-level calibration work. Paul shares how his experience evolved through Southwest Research Institute, Transcat, Morehouse, and Applied Technical Services, leading to later support of U.S. Navy calibration programs. Key discussion points include: Transitioning from military to civilian metrology roles Early mentorship and lab culture Piston-gauge and dead-weight tester practices Differences between ASTM E4 / E74 and ISO 376 / 7500 calibrations Managing primary-pressure standards and effective-area verification Collaboration among commercial labs, NIST, and Navy facilities Communication, documentation, and supporting new technicians 🎧 Explore how decades of experience—from force frames to primary-pressure systems—connect across the military, commercial, and standards communities. Timestamps 00:00 – Introductions and background 05:00 – Marine Corps calibration and mentorship 20:00 – Pressure-metrology discussion 35:00 – Force calibration: ASTM E74 vs ISO 376 50:00 – Primary standards and uncertainty chains 01:00 – Industry collaboration and continual learning