Continuity tester circuit - a sample PCB made for the Electronics Project to be fabricated by third year apprentice Electricians. Pairs of wires are for the battery, an LED, and the contact/measuring plates.

Redesigned the board to make it smaller, with a simpler layout, so fewer errors made by those assembling them, and easier for the Lecturers to check the Students' work. Also means it'll fit in a smaller case, and there'll be much less copper etched from the underside, so the etching chemicals will last longer. Small savings all around.