hey i've got one of those i belive. bought it on ebay.check out watthourmeters.com.i belive mine is a westinghouse CS meter 5 amp 120volt.a friend of mine name dave dahle runs the sight. just look under the westinghouse category.it will tell ya all ya want to know about it.what was it used for? belive it was for the tech to check appliance performance.

[This message has been edited by circuit man (edited 06-08-2004).]