Saint Luke painting the Virgin by Niklaus Manuel Deutsch, 1515. Note mahl stick in hand.
Excerpt from this posting:
"You are being handed this card because you are in good company. Like 9 out of 10 men (and most women) who come up to me while I'm painting on location you have just asked, "What is the stick for?"..."
This journal entry is now available as part of a compilation in ebook form:
Epub and PDF formats
95 Full-Color Illustrations (Oil paintings by the author.)
2006 - 2010
More information here.