Perfect for testing for OSHA requirements. Meets ANSl S1.4 Type 2, IEC 651 type 2, DIN 45633, and JIS 1502. Offers a wide variety of measuring options including A and C decibel frequency weighting scales, fast or slow response, AC or DC output and peak function. The large display has a resolution of 0.1dB and also indicates low battery, and over or under load. Covers 30 - 130dB in the A scale and 35 - 130dB in the C scale, with an accuracy of ±0.7dB. Can be easily calibrated using the internal oscillation system. Has a fold out tripod stand and comes with carrying case, instructions, calibration tool, and a 9V battery. Dimensions: 8-1/8 x 3-1/8 x 1-3/8". Weight: 10 oz.