Design
The design on which most modern spring tape measures are built was patented by a New Haven, Connecticut resident named Alvin J. Fellows on 14 July 1868. According to the text of his patent, Fellows' tape measure was an improvement on other versions previously designed.
The spring tape measure has existed since Fellows' patent in 1868, but did not come into wide usage until the early 1900s, when it slowly began to supplant a common folding wooden design of carpenter's ruler.
With the mass production of the integrated circuit (IC) the tape measure has also entered into the digital age with the digital tape measure. Some incorporate a digital screen to give measurement readouts in multiple formats.
There are also other styles of tape measures that have incorporated lasers and ultrasonic technology to measure the distance of an object with fairly reliable accuracy.
Read more about this topic: Tape Measure
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