Albert Einstein He developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).

The first integrated circuit invented by the engeneer Jack S. Kilby1 (1923-2005) contained only a few transistors. Texas Instruments.

STL files (tachometer case)

Download the .zip file with the the STL files below

Download and unzip the ZIP file. Print the files using 2 perimeters, 15% infill or more. I've used a 0.3mm nozzle and the TronXY x5 printer.

STL files 3d printed tachometer