A metronome.
I believe the answer you're looking for is either "time signature" or "tempo" (which are two different concepts).
Hargen the Measurer was created in 1977.
It is called a semi protractor and the fully-circular one is called an angle measurer
A laser measurer can be purchased from a wide variety of places. A laser measurer can easily be bought at a local electronics store or hardware store. It can also be bought from auction sites.
The pattern of a musical beat is commonly called the rhythm of the music.
Ammeter
Hydrometer.
musicalS are called musicalS because they have MUSIC in them making them MUSICAL
A laser distance measurer works by emitting a laser beam towards a target and measuring the time it takes for the beam to reflect back to the device. By calculating the speed of light and the time it took for the beam to return, the device can accurately determine the distance between itself and the target.
A musical foot is called a "spondee"
A spaghetti measurer is used to determine the amount of spaghetti for one serving. Depending on the size of your spaghetti measurer, I have seen up to four servings, you would be able to know how much spaghetti to cook for a certain number of people.
Rangefinder