This technique is named time-of-flight measurement. The internal circuitry takes advantage of this timing to calculate the distance, supplying instant digital readouts that may be much more specific than manual methods. Two or three ft off is a big situation but for my utilizes I think two or three mm https://edwin5kpq9.wikimidpoint.com/6412777/top_guidelines_of_قياس_المساحات_والأطوال