The image of the unique 3cm ruler gives an immediate visual and measureable cue as to the size of the screen image compared to the life size anatomy.

Make accurate comparisons between life-size (what you see) and image-size (what you get)! Each marker has a lead 3 cm ruler with high density lead characters specifically designed for digital imaging where the image size does not always match life size anatomy. A must for digital imaging! Color coded: L-Blue / R-Red

Make accurate comparisons between life-size (what you see ) and image-size (what you get)! Each marker has a lead 3cm ruler with high density lead characters specifically designed for digital imaging where the image size does not always match life size anatomy. A must for digital imaging! Color coded: L-Blue/ R-Red.