Category: Stethoscope
Estimated Date: 1901
Name: Pilling Kehlers Stethoscope
Manufacturer: Pilling

Description: 2” diaphragm head with engraving on metal part as above plus Pat dates of May 4, 97 and June 25, 01. A raised 1/2” portion on the back serves as a connector to hold the two arms for the rubber tubing which are parallel to the surface in a V shape. There is a protective metal plate.

Reference 1: 263