Acoustic calibrators available for rental are tabulated below:
| Brand | Class | Calibration level, dB | Calibration frequency, Hz |
| Larson Davis CAL200 ½” | 1 | Switchable between 94 and 114 | 1kHz |
| Bruel & Kjaer Model 4321 1”, ½” and ¼”. | 1 | Switchable between 94 and 114 | 1kHz |
| Larson Davis CAL250, ½” and ¼” | 1 | 114dB | 250Hz |
