This object is a case for the GM328A Electronic Components Tester. It has a compartment for the 9V battery and an access hole for the extra test leads.
The thin plate on the battery cover should be placed between the Component Tester and the battery to prevent any short circuits.
6 screws such as M3 x 12mm are required. Similar screws will also fit.
Copyright 2012-2017 by Claude Théroux