ec2-18-220-160-216.us-east-2.compute.amazonaws.com | ToothyWiki | RecentChanges | Login | Webcomic *PING* Also: Most pieces of scientific machinery, specifically the ones where you put in your carefully prepared sample, shut the door, the gremlins take the sample, make up a number and you write that number down. Examples include spectrometers, NMR machines, colorimeters and so forth. Note also that a standard engineering feature is that the more expensive the machine, the longer between beeps.