The 73/77 Digital Multimeters are a versatile series of multimeters designed for a wide range of measurement applications. They feature the classic 70 series design with a removable holster and weigh only 0.34 kg.
The Fluke 73 and 77 series are built to meet EN61010‑1, CAT II 600 V, UL, CSA and TUV safety standards, offering high‑contrast digital displays, analog bar‑graph segments, and features such as auto/manual ranging, touch‑hold, and audible continuity testing. Both models include an ergonomic case with a removable holster and a lifetime warranty.
Key specifications include 3200‑count displays, 31‑segment analog bar‑graphs, sleep‑mode battery preservation, and typical battery life of 2000 hours. The 73 III measures 166 mm × 75 mm × 28 mm, the 77 III 190 mm × 89 mm × 37 mm, each weighing 0.34 kg. Accessories supplied are test leads, the operator’s manual, a battery, and a holster.
| Display counts | 3200 |
|---|---|
| Analog bargraph segments | 31 |
| Auto and Manual ranging | Yes |
| Automatic Touch Hold | Yes |
| Audible continuity/diode test | Yes |
| Sleep Mode | Yes |
| Battery life (typical) | 2000 hours |
| Size (Fluke 73 III) | 166 mm × 75 mm × 28 mm |
| Size (Fluke 77 III) | 190 mm × 89 mm × 37 mm |
| Weight | 0.34 kg |
| DC Voltage range | 600 V |
| AC Voltage range | 600 V |
| DC Current range | 10 A |
| AC Current range | 10 A |
| Resistance range | 32 MΩ |
The typical battery life is 2000 hours.
The 77 III measures 190 mm × 89 mm × 37 mm.