Back in the 60s, in another life, I worked for a couple of years in the Concrete and Soils Laboratory of the NSW Railways. I was a very young assistant to the engineer. My job encompassed field trips to obtain samples, working with the diamond drilling team to get core samples, obtaining samples of concrete pours (the railways at that time had their own concrete batcing plant) and developing shear and compression load testing machines for core samples. One interesting device used condoms to enclose the samples for load testing. Part of my job was to take an official order for condoms (extra strong) to the supplier. It is a wonder that the bean counters never questioned the invoices

Anyway, as part of all this, I also had to do a lot of technical drawings and print the copies using an antiquated machine that stank of ammonia. Most of the drawings were hand lettered and naturally had to be legible.
I don't know what happened but these days I am lucky if I can read my own handwriting
Sometimes I look at what I have written in absolute disgust.