My Jealousy Boyfriend

It’s called a feeler gauge. In the old days, before computers and laser sensors, engines lived or died by tiny gaps no human eye could judge. A spark plug had to kiss the air with exactly 0.035 of an inch between its electrodes. A valve had to clear its seat by a hair’s breadth, no…

Once you know the history, the mystery deepens instead of disappearing. The script was drawn in the 1880s by a bookkeeper named Frank Mason Robinson, using the elegant Spencerian style that defined professional penmanship of the era. He was not a trained designer in the modern sense, but a practical man tasked with giving a…