The Metrosonics db-210 from Quest Technologies, Inc. is a basic sound level meter that carries a "5-Minute Simplicity Guarantee" - users are guaranteed that it will be operational in five minutes upon taking it out of the box. The easy-to-use, Type 2 meter is ideal for many community and industrial measurements, offering a large LCD, a measuring range of 40-130 dB and a choice of fast or slow response.Quest Technologies, Inc., Oconomowoc, WI.