Model RDB-10 is a hand held Resistance decade box that creates a specific resistance value using a combination of switches. Designed with accuracy to meet the needs of industry and education alike. The RDB-10 is a compact, convenient tool for aiding in engineering design and testing as well as calibration of test equipment. It offers 7 decades of resistance ranges, from 1 Ω to over 11 MΩ in 1 Ω steps. Easy-to-use slide switches allow for straightforward addition and subtraction of resistance values. RDB-10 is a passive device that requires no power source.The unit is housed in a rugged handheld enclosure with an impact resistant rubber boot. Read Less...