app/Models/MeterReading.php
public function getReadingWithMetricAttribute()
    {
        if ($this->meter && $this->meter->metric) {
            return $this->reading.' '.$this->meter->metric->symbol;
        }

        return $this->reading;
    }
public function getReadingWithMetricAttribute()
    {
        if ($this->meter && $this->meter->metric) {
            return $this->reading.' '.$this->meter->metric->symbol;
        }

        return $this->reading;
    }
Accessor for retrieving the current meter reading
with it's metric symbol. For example: '120.00 Gal'.

@return string