Antique 100ml Germany Graduated Clear Glass Cylinder Hand Etched w / Stopcock

Description

This is a 100ml graduated cylinder with hand etching and a functioning stopcock.
It was made in Germany and is inscribed at the neck: g CALRE CO. MADE in GERMANY SAN FRANCISCO CAL.
At some time in the dim past the base was broken. It was then repaired by cementing a sample / petri dish to the base.
A repair which was old when I first bought this in the 70's.