Hourglass marking 1/4 up to 1 hour (16thC) from southern Germany at Germanisches Nationalmuseum. Nuremberg, Germany.
Photo by Jim Steinhart © 2021, all rights reserved. (Ref: DYNM1911)

Click an index below to see this photo among related images:

German Clocks
Germanisches Nationalmuseum - Globes & Scientific Instruments
Hourglasses