Digital Multimeters

 Keithley 2000 Series: 6½-Digit Multimeter with Scanning
 Keithley DMM7510: 7½-Digit Graphical Sampling Multimeter
Keithley 2110 Series: 5½-Digit Dual-Display USB Multimeter
 Keithley 2010 Series: 7½-Digit Multimeter with Scanning
 Keithley 2002 Series: 8½-Digit Multimeter with Scanning
Keithley 2001 Series: 7½-Digit Multimeter with Scanning
Keithley 2100 Series: 6½-Digit USB Multimeter
Tektronix 4000 Series: 5½- and 6½-Digit Multimeters
Keithley 2015 Series: THD and Audio Analysis Multimeter