You point the instrument at an object, say a wall, and press a button. It shows the distance in meters mm.mm. Works on echo time measurement principal.
2007-01-13 16:21:49 · 3 answers · asked by marutibijoor 1 in Science & Mathematics ➔ Engineering
OK, some do work on echos the sonic type. But the ultrasonic measuring devices are not very accurate and have a pretty limited range. I prefer the laser type. I have and use one sold in the US by Hilti, its made by a German company. It is accurate to within 1/16 of an inch on 600 ft.
I use it to make field measurements. I have to travel to customer locations and its not practical or economical to bring an assistant along to help make the measurements. It is also handy to make measurements across an open space where using a tape measure would be impossible.
2007-01-13 16:35:06 · answer #1 · answered by Roadkill 6 · 0⤊ 0⤋
The Replay and checklist buttons so i could coach adult men what fools they make of themselves so regularly.. ie..whilst a 50 12 months previous guy vrooooooms his automobile and runs a purple gentle in front of a cop in an attempt to "provoke" the 20 12 months previous female status on the crosswalk.
2016-12-16 04:12:11 · answer #2 · answered by kull 4 · 0⤊ 0⤋
Ultra sonic or sonic tape measures are available at Home Depot and Lowes
2007-01-13 16:29:46 · answer #3 · answered by MarkG 7 · 1⤊ 0⤋