Agilent/HP / Calibrator / U1401A 
Dual display with bright LCD backlight 
Simultaneous signal source and measure for all-in-one-tool convenience 
Source bipolar voltage and current, square-wave signal, with auto SCAN and RAMP output modes 
Measure DC, AC, AC+DC, Resistance, temperature, frequency, pulse width, duty cycle; check diode and continuity 
3-year warranty for greater assurance of quality and reliability 
4-20 mA and 0-20 mA percentage scale readout 
50,000 count true-RMS DMM 
Built-in battery charging capability