1/8" Thick, Durable Anodized Aluminum Measuring Board, Nothing could be easier to use! Just put the nose of your fish against the vertical flange and measure where the tail overlaps the pre-printed markers. **3.5" wide x 24" long ** Aqua Blue bright and shining color **Pre-printed markers **Anodized aluminum construction Non-corrosive With constant regulation changes, there is no excuse to be without a ruler and this one will stand the test of time 2 hang holes are pre drilled making it easy to store in any fashion. This ruler is at home on the boat, in the RV, or in the truck. Great for Fresh and Salt Water Use, last long life.