Light Bulb Tester
My grandfather made this Christmas light bulb tester in the 50's or 60's. It might even be from the 40's. All of the principal family members who would know these answers, are gone..
To operate, Plug the tester in and then slide a bulb onto the brass strip on the right. Slide the bulb to the left till the socket touches the brass strip on the left. If both bulbs light, the blub is good. It also works on regular incandescent bulbs.
Light Bulb Tester
My grandfather made this Christmas light bulb tester in the 50's or 60's. It might even be from the 40's. All of the principal family members who would know these answers, are gone..
To operate, Plug the tester in and then slide a bulb onto the brass strip on the right. Slide the bulb to the left till the socket touches the brass strip on the left. If both bulbs light, the blub is good. It also works on regular incandescent bulbs.