You want an accurate digital clock movement? You’ve got to get yourself some of these – accurate to half a second every million years!

For that sort of accuracy you’d expect it to be expensive, right? You’d be wrong. On offer at the moment, 40% off normal price, yours for just $8.00 each. I think that’s amazing.

Apparently a radio signal is sent from Colorado four times a day and the Hechinger movement re-sets itself a tiny fraction each time. It even re-sets itself for daylight savings time. Details from Clockparts here.

Also on special offer are these superb giant clock movements. Fancy a big clock? How about three to three-and-a-half feet across?

The kit is American made, available in Roman or Arabic numerals and contains everything you need, hands, numbers, the lot. Normally $29.99, at the moment you can save 20% and get them for just $24.00.

Full details here. Don’t worry if it says they’re still $29.99 on the front page of the site, they’re $24.00 on the order page, honest – although you might want to be quick, I don’t know how long either offer lasts.