CERN HPM7177 8.5 digits (open source) eevblog Advantest 8.5 digits (cheap, but dont pay more than $1k, see Marco Reps) Keithley 2002 (8.5 digit, 6ppm, 28bit ADC) Keithley DMM6500 (25ppm) Hioko DM7276 (7.5 Digit, 9 ppm, EXT I/O, LAN, and USB) HIOKI DM7275-01 (20ppm) GW Instek PCS-1000I , integrated 300A shunt, 6½ digit Auflösung, bis ..

Read more