Mouth Simulator Type 4227-A

Mouth Simulator Type 4227-A - backview

Mouth Simulator Type 4227-A

Mouth Simulator Type 4227-A

Mouth Simulator Type 4227 - all parts

Mouth Simulator Type 4227-A

Mouth Simulator Type 4227-A with microphone

Calibration

Mouth Simulator Type 4227-A with microphone

Mouth simulator Type 4227 with microphone

Mouth Simulator Type 4227 with Telephone Test Head Type 4602