The Martel BPPA-100 BetaPort Pressure Adapter allows all Beta pressure modules (with the exception of the DC measurement model) to be used with the Martel MC-1200 and MC-1000 Multi-Function Calibrators, the BetaGauge 321, 311 and 301 Pressure Calibrators, and the Martel Electronics M2001 and 3001 Laboratory/Bench Standards. Beta pressure modules increase the versatility of Martel pressure calibrators by adding up to 29 additional pressure ranges covering gauge, vacuum, absolute, compound, and differential measurements.