1888 Jacobi’s Printers' Vocabulary / S / Soundings. [p. 128]
Pressmen are said to be in “soundings” when they get near the bottom of their heap and their knuckles rap the horse.
· ·
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Entry taken from Printers' Vocabulary, by Charles Thomas Jacobi, 1888.
· 
· 