I am a magnifying glass!
A tachometer measures RPMs, and a hand held tachometer is used to measure the speed of smaller things, like engine parts. A hand held tachometer is usually used to measure the RPMs in a car engine, but tachometers have also been used to measure the rate of blood flow in the body.
Hand Held Products was created in 1999.
== == It is used to magnify/ or make things appear closer?to magnify small objects
when was the first hand held organizer made
who invited the first hand-held camera?
a hand
where was the hand held blow dryer invented
A PDA or any computer small enough to be held in one hand (most smart phones now classify as hand held computers).
Originally by hand, then by hand held machines.
A hand-held microphone is a microphone that you hold in your hand, such as you've seen being used in concerts, and most other public occasions.
an axe has a long handle and held in both hands. a hand axe has a short handle and held in one hand.
A portable lead hand-held communication inscriber is a pencil.