Dismantling it is very easy, a couple of screws allow removal of the battery compartment cover on the side above the meter, and six screws in the sides of the meter undo to allow the Bakelite tub ...

The power-draining back-lit display of the Q1, problematic in a battery-powered ... a similar storage compartment in [Dave Jones]’s recent teardown of a portable Fluke 37 multimeter).