One such practical pocket-book
link is another Berthoud classic originally published in 1759, "L'Art de conduire
link et de regles les pendules et les montres" (or "How to manage and
goedkoopste iwc-horloge regulate clocks and watches.") Our copy is a fourth edition that was printed in Paris in 1811 and measures about 6 ½ inches tall by 4 inches wide.