Reference tools for hands-on work around the house and workshop — starting with how paint colours actually combine when you mix them for real, not how light does on a screen.
Mix real pigment colours the way a subtractive palette actually behaves — blue and yellow make green, not grey.
Paint a 3D room with your own mixed colours and watch the light bounce. Matt through gloss, six room shapes, and a choice of floor.
Room dimensions to litres and cost, with real coverage rates by paint type and surface porosity.
The right fixing for the wall and the weight, plus UK stud spacing standards and a screw gauge reference.
Pick the shade you want and get the exact brew time — real extraction kinetics, teabag vs. loose leaf, any mug size.
Real heat-transfer physics for boiling, poaching, frying and scrambling any egg — all sizes, bird types and doneness levels, with a working countdown timer.
Cooking times solved from real heat conduction — set by thickness, not weight — with a live timer that says when to flip, when to pull and how long to rest.
Cement, sand, aggregate and water for any volume and grade — real mix ratios and the dry-volume correction.
Drift-corrected stopwatch with real lap statistics, a multi-timer, interval trainer, precision metronome, and reaction-time tester.