RRamp Meter V3 The only device that will accurately measure DCC Volts/Amps.   Manual     Measures AC and DC Volts/Amps. Rated at 10 or 20 Amps, costs less than DVMs that cannot measure DCC. Measures true RMS Volts/Amps, +/- 2%. Suitable for all scales. No batteries required. Designed for Left/Right-hand use. PCB length 5.63"; Enclosure length 4", width 2", height 1.25" 3 Styles Available.

Better than a traditional meter: The amazing RRampMeter designed for Model Rail enthusiasts by Tony’s Train Xchange does what no other meter can do! Most common meters can read both ac and dc, but can not accurately read DCC power. In order to accurately read DCC power a “true RMS” meter, like the RRampMeter is needed. This is due to the shape and frequency of the DCC signal. The RRampMeter automatically detects and switches to the type of power it is measuring. Two LEDs indicate DCC or ac , no LED on indicates dc. RMS is an abbreviation for Root Mean Squared. It is a mathematical way of analyzing a distorted wave form. Easy walk-around measurements of layout voltage drops, accurate booster output setup to optimum voltages for decoders and sound units. Adjustable contacts permit direct track voltage measurements for all scales. Test or Clip Leads (Fig. 3) can also be used for other applications. Test Leads or Layout Wiring can be conveniently connected to the rear screw/socket terminals (not shown). Designed as a portable troubleshooting tool or as a panel-mount meter (Fig. 1).   Panel Mounted: Direct contact: With clips, For all gauges. Current meter: For testing purposes. Version I  RRampMeter Circuit Module (Fig. 2) Version II  RRampMeter with Enclosure and Clip Leads (Fig. 3) Version III  RRampmeter Same as version II. with Battery backup for measurements below 7 Volts Version IV  RRampmeterHP Same as version III but for large Scale high voltage and current applications: Digital: 38.6 v and 18-20 Amps AC: 27.6 v and 18-20 Amps DC: 38.6 v and 18-20 Amps