Pros: Well worth considering as replacements for Philip Harris Card Loggers; Universal Interface and so on. The ‘Logbook’ puts your Philip Harris sensors to use with an easier interface box.

Cons: No serious cons. Works only with Datadisc software. Doesn't support import / export of SID files.

Verdict: the unique selling points of the Logbook range are unclear to me – though price, ease of use or learning potential can't be questioned. If you find something you need then all’s well and good.

ScienceScope offer a surprising array of loggers for primary and secondary schools. The Logbook Primary data logger aims at ages 8-14 and supply these as a kit. The unit has built in temperature and light sensors while an enhanced version (Logbook ML Primary data logger) has sockets at the front for more sensors and the ability to log data remotely.

Two secondary data loggers were introduced in 2003, each able to use Philip Harris sensors. The Logbook SM has a 16-character display, three built-in sensors and room for two others. The Logbook XD offers more sophisticated recording options – including very fast recording for physics. The Logbook ML is the later and greatest of the set.

These interface boxes can use Logbook sensors – which add up to a very respectable range of options. Sensors offered measure pulse, force, voltage, current, oxygen, humidity and more. There’s a colorimeter, a barometer and a very well designed temperature probe. ScienceScope also have a (USB) camera that can film experiments as you log data.