Cool. That sounds quite fancy for basic estate agent floorplan purposes, but tech evolves mega-rapid innit.
When I worked at an architect’s a few years back, doing house measure surveys for floorplans, the elder architect dude used a big fold-out wooden ruler, and the slightly younger (but still a good 15 yes older than me) surveyor guy used a combo of laser measure and actual tape measure.
Remind me when, going back further, to the late 90s, at university, we were introduced to this radical new GPS tech that you’d set up on a tripod, and after half an hour it could identify co-ordinates to within a metre or whatever. We were told that, one day, this might be accurate and fast enough to use on site for day-to-day work. Nowadays our phones just constantly doing this pretty much instantly now.
Shortly after, working for a civil engineer, we used ‘total stations’ on tripods (the, then, modern version of a theodolite) to do setting out, which still required someone walking around with a mirror on a pole to bounce the laser off. Now it’s just the engineer and his pole (
) with a GPS sensor.
tl;dr - properly went off on a massive pointless reminiscence tangent then… 
something about grandpa Simpson and onions on a belt
