Homemade Photocell Tester

The tester is really just a collection of different photocell connectors positioned adjacent a domestic bayonet lampholder. Normally a Crown Silvered lamp is employed here - I removed it to avoid the camera flash being reflected!

Behind the lampholder is a connector for a two-part cell. To the right of the lampholder is a neon indicator light. There is a hole to the left - this may have also had an indicator light fitted at some point. I'm not sure what the foam ring in the corner is.

The connections can all be seen with the underside cover removed. For some reason, a disconnected 8W fluorescent ballast is fitted, along with a relay which doesn't actually serve a purpose...presumably these did something when the tester was first put together!