Category: Stethoscope
Estimated Date: 1906
Name: Stethoscope
Manufacturer: Penn

Description: 1.25” diaphragm type stethoscope with Pat date May 22, 06 or 08 Has two separate metal tubes to connect rubber tubing, which is present with thermoplastic earpieces. The diaphragm is covered with a protective metal piece. Related to the Bowles.

Reference 1: 39

Monaural Stethoscope, Brass, Quains
Stethoscope, Bowles
Stethoscope, Dr. Pollards