The Vintage Victor Coronet Camera, Weston Master IV and Kopil Light Meter is a classic analogue light meter set designed for photography enthusiasts. The Weston Master IV series ensures accurate light readings, perfect for achieving the desired exposure levels when taking photos with a focus on capturing timeless moments with a touch of nostalgia. This unit, model s4614, is specifically tailored to fit cameras, providing a reliable tool for photographers looking to master their craft. I believe they are all working.