This article presents basic design ideas for laser virtual floor markers using inexpensive and readily available components. The laser virtual floor marker introduced here is a specially developed ...

[Calango] is a railway technician, and for a school final project created the Rail Wear Surveillance Trolley (RWST) which is a delightfully designed device made mainly from PVC conduit with one job: ...

Tell us a bit about green beam lasers. How are they different? Red beam line lasers have been standard on the jobsite for years, but newer green beam lasers are up to four times brighter than red ...