Parametric Clam Gauge (metric or imperial)

Fishing action video! https://vid.me/JGd6

If the clam won't fit, you must eat it. Or something like that. Set the large hole to the minimum clam size according to your local regs, and then you can test the clams you dig to make sure they are legal. In my area, the clam is legal if there is at least one orientation that won't fit through the hole.

To make one, just click on the "Open in Customizer" button to the right, choose metric or imperial, enter the minimum clam size you are targeting in mm or inches (fyi, 1.5" is 38.1 mm), and enter your printer nozzle size. After you print it, make sure the clam hole measures correctly so you don't end up keeping too small clams -- you can make fine adjustments by tweaking the nozzle size variable.

Note: If you download as opposed to using customizer, and want the text to print, you will need to use the "write" project and modify the "use <Write/write.scad>" line in clamGauge.scad to indicate where the files are: http://www.thingiverse.com/thing:16193

Printed on a Lulzbot Mini using ABS.