Three Paediatric face masks, 1900-99. One is a Clausen Har
Three Paediatric face masks, 1900-99. One is a Clausen Har
Three Paediatric face masks, 1900-99. One is a Clausen Harness, a triangular piece of rubber which engages the metal spokes on a face mask and so holds it in place close to the patient's face.