Tesco 480/551A Current Tester W/ Scientific Columbus SC 10 134161313812 One of the unit's power

One of the unit's power on and the other doesn't

Includes Regulator w/ 0 - 1

Manufacturer Aver Model Number CAM520 SKU 19-58144 Ref 23-81244

Manufacturer Tektronix Model Number 620-0057

Tesco 480/551A Current Tester W/ Scientific Columbus SC 10 134161313812 One of the unit's powerCondition Used Description This Current Tester has been pulled from a functional environment. The unit is in fair condition and has heavy wear from previous use including blemishes, scuffs, and scratches. The wear is only physical and does not affect the functionality of the unit. Includes only the Current Tester, and Scientific Columbus SC 10 Portable Watthour Standard. No additional accessories. Photos are of the actual unit for sale. Inventory is