This vintage Otomet Free-Field Signal Generator from Vicon Hearing Instruments (Vicon Instrument Co. in Colorado Springs, CO.), an is a rare find for collectors and curators. Used in the field of Otemetry, this instrument was used to deliver a dampened wavetrain signal at a distance of 28 inches from the front.* Made in the United States during the 1960s, this machine was designed to produce highly accurate and precise sound measurements in a variety of settings. Whether you're a healthcare professional, lab technician, or just a fan of vintage electronics, this item is sure to impress. Featuring the Vicon brand, this piece is a testament to the quality and craftsmanship that the company is known for. The Type is specified as an Otomet Free-Field Signal Generator, which provides important information about its function and capabilities. This item falls under the categories of Other Healthcare, Lab Dental, Healthcare, Lab Dental, and Business Industrial, making it a versatile and sought-after addition to any collection. * hearinghealthmatters. org/waynesworld/2014/otometry-john-victoreen/ Staab, Wayne; Hearing Health Technology, Additional Historical Information Related to Fitting Hearing Aids Using Otometry; October 20, 2014; This item weights approximately 15 lbs.