portable tachometer is used to measure the RPM of rotating devices such as fans and gears. It can also be used to measure the linear surface speed of moving devices such as conveyors and treadmills.
You can perhaps buy a used portable tachometer by going on to www.amazon.com
www.checkline.com provides the opportunity of comparision of portable tachometers. they offer a complete line of Tachometer, Contact Tachometer and Combination Digital Hand-Held Tachometer.
There are many places online where you can purchase a portable tachometer however, you may want to go to a website like PriceGrabber.com to get the best price.
There are many different models of portable tachometers. Most of them are about as big as a large cell phone.
The inventor is unknown for a tachometer. However, the first documented use of a tachometer device was by the German engineer Dietrich Uhlhorn in 1817. He is credited with its first use, but not necessary as being its inventor.
It is hard to find people who can repair technical equipment like portable tachometers. However there are many online service that will allow you to mail them and have them repaired for you. Try this site here: www.onlyprotools.com . i am assuming a mechanic would know how to fix that, since tachometers are auto related!
A tachometer will help your engine by helping you make more efficient use of it.
Use an inductive pickup on plug-wire #1, and connected to tachometer located in vehicle.
use a tachometer
It would be possible to set up a store in a portable building. You would still need to have an operating licence, and may have to get specific permissions to park your portable store in most places.
i have a portable laptop.
It can be used to make sure that tapes are being played at the normal speed. It can also measure revolutions per minute for all sorts of objects.