High Voltage Differential Probe (Probe Master 4241)???
Probe is in good overall cosmetic and working condition.
I believe this to be an unmarked Probe Master 4241, I have seen them marked and unmarked.
Please look at all photos and ask all questions before offerding.
This is another piece of test equipment from my lifelong collection of meters and test equipment.
I am going through another bldg. so check back for more equipment.