I was searching board to measure fish. Local stores sold nothing and nearest decent one was sold overseas, but it was inch. So, little bit tinkering with 3D design software and TUMB - The Ultimate Measure Board was ready.
To build one, you have to print enough pieces, 15cm each, 2x8mm fiber rods for connecting pieces (holes are 9mm, so there is some extra space to use inch rods) and good glue. I'm using silicone. Measurements are in cm. so small line is 1 cm and bigger 5cm, color change means 15cm.
Hope you catch big ones! (atleast 4 pieces fishes.) I would love to see pics!
NOTE!! I'm using 0.6 nozzle!!