This replica wooden Monaural (one ear) Stethoscope is correct for the Civil War period.
The device was invented in 1816 for listening to patients hearts and lungs. It was used by both CS and US doctors and medical personnel. 

This device measures 6-inches long and has a diameter of approximately 1-3/4 inches. It is made from real wood and has a polished finish. 

Limited quantity in stock.

Imported.