Vibration Meters IRD306 and the IRD811. Both of these meters have been around in the world for nearly 40 years now and have gone through several avatars. An Analog Vibration Meter is your best bet for accurate vibration measurement because, unlike Digital Vibration meters, its moving needle provides you not only a simple to note vibration reading, but also depicts the fluctuations in the vibration and behaviour of the machine more accurately.