Testo 0563 8170 sound level measuring apparatus 816 1 testo 0563 8170 p the testo 0563 8170 is a top of the range sound level meter which complies with all requirements of noise level measurements according to iec 61672 1 class 2 and ansi s1 4 type 2 as a result it is ideal for carrying out noise level measurements in the workplace industrial premises and other public places p p this meter has all the features enjoyed by its little brother the testo 816 but also comes with a built in