Sargent W.M. Welch Triode Tester Demonstrator Teaching Vintage

Description

Sargent Welch Triode Tester Demonstrator Teaching Vintage. It is a Triode Tester Teaching or Demonstration Fixture. It may work, but we have no triodes to test. However, you can mount it on your wall as a sculptural object. It has all the circuitry painted and labeled. Back is removable. A very unique piece made by the W.M. Welch company. Unsure of manufacture date, but likely made in the 1950's. Has a carrying handle. The size of the wooden box is about 31 1/4" wide by 21" high, by 5 3/4" deep. In very good condition- all lettering is mint! There are a few tiny dings on the top left corner as shown in pictures. They could be easily touched up. Wikipedia says "A triode is a type of vacuum tube (or valve in British English) with three elements: the filament or cathode, the grid, and the plate or anode. The triode vacuum tube was the first electrical amplification device. Triodes are largely obsolete, having been replaced by the transistor, but do still find application where power consumption and overall size are not concerns, but low component count and high power capacity  are."
If you are interested in this, please read full description and carefully examine pictures BEFORE USING BUY-IT-NOW option!