Dura Auto-Batch™ Easy-Caddy System Videos Learn how to operate your Dura Auto-Batch™ Easy-Caddy in the below videos. Dura Auto-Batch™ Easy Caddy Introduction How to Calibrate your DURA-METER™ on a Auto-Batch Easy Caddy System How to switch your DURA-METER™ from Gallons to Ounces