Click to expand Tap to zoom Camera Calibration Card Sold out Original price $1.00 - Original price $1.00 Original price $1.00 $1.00 - $1.00 Current price $1.00 | / Quantity Sold out Use this card to perform an automatic calibration of FarmBot's camera. You may also print your own card using these files: - Front.pdf - Back.pdf Note that the design must be printed without scaling or stretching.