Case length gauge 3D print?

Hello looking to make some case length gauges for reloading ,I’m thinking about 3D printing them anyone have any files that might work? I’m looking make them a standard size (size of index cards) but have different caliber but yet fit into a index box

Is this what you are thinking of?

Midway Sells them for less than $20.

Yes , But broken down to Individual caliber there a few I reload that are not typically on them .22 tcm , 300 blk(become more common) , 460 Rowland , . 45 win mag