Two circle contact goniometer
Stoe & Cie, Fritz Rheinheimer, Heidelberg
Stoe two circle contact goniometer (nickel plated brass
and blackened brass base) with graduated circles and vernier
read-out, a steel rod with contact plane and specimen
holder on a ball and socket joint. Height 19.5 cm.
Signed on the vertical circle "Stoe & Cie | Fritz
Rheinheimer | Heidelberg" and "Made | in | Germany",
first half 20th century.
Similar instruments exist with a slightly different signature
on the vertical circle "Stoe & Cie | F. Rheinheimer | Heidelberg"
and "Made in | Germany", (see image below)