"Transistor Tester LCR Diode Capacitance ESR meter Signal Generator"
Look it on Ebay or on Aliexpress, there are different models with the body and without it, ready for the device or for a solid assembly.
https://www.ebay.com/itm/2017-Version-Transistor-Tester-LCR-Diode-Capacitance-ESR-meter-Signal-Generator/142372146504