http://eevblog.com/files/ExtechLP100release.pdf
Dave & Dr Phil look at how Extech's new TL100 Laser Test Probes work.
FYI: The electronics beanbag was custom made, with material from here:
http://www.spoonflower.com/fabric/382464
and made by this company in Western Australia:
http://www.beaufortstreetbeanbags.com.au/