Update: There is also a magnetic version of the switch tester now 

[https://www.printables.com/model/943189-stackable-magnetic-5x5-mechanical-switch-tester](https://www.printables.com/model/943189-stackable-magnetic-5x5-mechanical-switch-tester)

The usual switch testers are normally just one plate, either way to big if you have  many switches or you simply can't store it properly.

So I designed a stackable mechanical switch tester which can be extended and customized as you like. The different trays click into place and stay connected (but needs a good calibration). Each tray can be fitted with rubber feet so the trays don't move around (7mm round feet) when you put them on a table.

You can use each tray alone or start with the bottom tray and build up the levels you need.

I also made some trays which have the switch type embedded as text (linear, tactile, clicky) but also a version without text. For the underside you can print the details about the switches on a sticker sheet and glue it in place. 

There are also some variants, with different patterns, of the top part to cover the switches. 

printed parts (as seen in my example pic):

1x Switch_tester_bottom_tactile

1x Switch_tester_linear

1x Switch_tester_clicky

1x Switch_top_hex

print instructions:

0.2mm layer height

no supports