description

# Gauge constructor

Gauge(String name, String description, double min, double max)

## Implementation

    Gauge(String name, String description, this.min, this.max)
        : super(name, description) {
      ArgumentError.checkNotNull(min, 'min');
      ArgumentError.checkNotNull(max, 'max');
      if (!(min < max)) throw new ArgumentError('min must be less than max');
      _value = min;
    }