1 SHURITE PANEL METER 0 - 100 AC MILLIAMPERES - This panel meter is model 850 and is in a plastic case with a 2 vertical threaded stud back mount / bracket. It measures 2-3/8" W x 2-1/8" H. The box is marked 8603Z. It comes in the original box and is new from old stock. Reference our part #SL73.