The 7150 plus Digital Multimeter (DMM) is suitable for general-purpose bench applications and for systems use. It performs all common measurement functions and has a scale length in excess of 200000. The DMM has a built-in GP-IB Systems Interface which conforms with the internationally recognised IEEE 488 (1978) standard, thus ensuring the compatibility of 7150plus with a wide range of system devices produced both by Schlumberger and by other manufacturers. The DMM is designed to be calibrated digitally, either via the front panel controls or via the GP-IB Interface. The DMM's built-in facilities obviate the need for special tools and mechanical strip-down, thus significantly reducing calibration down-time.