Estimated Date: 1904
Name: Sphygmomanometer, Erlanger
Description: Includes a metal case, base with place for revolving drum which is missing. Stop cock allows selection of connections and is built into the base. The timer and motor also are in the base. The manometer is a U-tube type. There is a glass dome to translate the pressure to the recording device which is a pen on a tambour mounted on a bracket.
Reference 1: 400