Category: Stethoscope
Estimated Date: 1860
Name: Stethoscope,Cammons pleximeter
Manufacturer: Codman and Shurtleff

Description: 9 5/8× 3.25× 2” brown wooden box with sliding lid contains a 4 × 7/8 composition bell, last 2” screws off and can be replaced with a 1 3/8× 1 3/8 flared bell. The tubing is woven cloth there is also a 2 1/4 b by 1 1/4 composition pleximeter which is signed. Codman and Shurtleff. There is also a 1×1 7/8 bell which has a threaded tip with remnants of rubber – may be Hernsteins modification?

Reference 1: 57