Millermatic 142 vs Millermatic 255

Same fields. Each cell is that model's published text. A blank stays "Not published by manufacturer." The outlet chip does not hide either column.

Spec	Millermatic 142	Millermatic 255
Process	MIG (GMAW) and flux-cored (FCAW). Source	MIG (GMAW), pulsed MIG (GMAW-P), and flux-cored (FCAW). Source
Output amp range	30–140 A. Source	20–350 A. Source
Rated duty cycle	100 A at 19 V, 60% duty cycle. 80 A at 18 V, 100% duty cycle. Source	230 A at 25.5 V, 60% duty cycle. Source
Input voltage and plug	120 V, 20 A, single-phase, 50/60 Hz. Source	208–240 V, single-phase. Auto-Line 208–575 V, single-phase. The quick specs do not print input amperes. Source
Wire or rod size	Set up for .024–.035 in. (0.6–0.9 mm) solid wire and .030–.045 in. (0.8–1.2 mm) flux-cored wire. Uses 4- or 8-inch spools. Source	Not published by manufacturer Source
Weight	33 lb. Source	Machine only: 84 lb. (38 kg). Machine with running gear: 148 lb. (67 kg). Source
Material thickness	Steel: 24 ga.–3/16 in. single pass. Aluminum: 18–14 ga. single pass. Source	Not published by manufacturer Source