These meters are especially suited for applications requiring high durability at low cost. They feature rugged steel backs, U-clamp for mounting, fade proof lithographed metal dials and static -free polystyrene or glass fronts. This series comes in a wide variety of case styles, colors and special ranges to meet cusotmers specifications. Current ranges up to 50amps self-contained are available for intermittent use. Voltage ranges start as low as 50 millivolts. Ranges up to 300 volts DC are available

Models 640-S8 (0-) and Model 640-S15 (0-15 Amps)