The boards are made of 1/8" anodized aluminum and have1/8" increments. The Check-It Stik is available in several sizes to suit your individual fishing needs.
M**S
Five Stars
Very good product, easy to read, sturdy
F**H
No metric scale.
Anyone who uses this will think no one who measures fish lengths needs millimeters. Guess what, the many fisheries biologists and fish veterinarians do! What was this company thinking?