Sun-Kraft Ultraviolet Ray Health Lamp

The Sun-Kraft Wireless Cold-Quartz Ultraviolet Ray Health Lamp is a cold quartz mercury-vapor lamp, originally sold by the Sun-Kraft Corporation for use in ultraviolet light therapy.

Resources

 * Promotional video in two parts: https://archive.org/details/AttheEnd1946 - https://archive.org/details/AttheEnd1946_2