When in Jędrzejów, Przypkowski helped his father collect, research and design sundials. After his death, he took over from him the maintenance of entire collection housed in a small museum located next to the town square. He went on to become one the world's foremost gnomonists, or sundial specialists. The sundials placed in some historic landmarks, including St. Mary's Basilica in Cracow, the Royal Castle in Warsaw and the Royal Observatory in Greenwich, are of his design.
Janusz Roszko, a journalist who was a close friend of Przypkowski's, described him as ``the last nobleman of the Polish Commonwealth", who ``swapped the sabre for a scholar's umbrella", ``wore his suit as aloofly as if it were a 17th-century gentleman's robe" and "every now and then rose a pinch of snuff to his mustachioed face".<ref>''Ibid.''</ref><ref>{{Cyt
| tytuł = Przekrój
| nazwisko r = Roszko
| wolumin = nr 1711
| strony = 11
}}</ref> Przypkowski was also a master of old Polish banter and humbug. You could never be know for sure whether he was joking or being serious. And if truth ever happened to stand in his way of telling a good enecdote, then it was tough luck for the former. He used to claim, for example, to be a cousin to Queen Elisabeth II of Britain<ref>{{Cyt
| nazwisko = Roszko
| imię = Janusz