Elegant spherical calipers with wing. Floral engraving on disc joint. Decoratively cut and engraved arms. Six scales of feet on wing for various cities (0-12 inches, by 1/2 inch). Diameter read directly from wing. A screw with trefoil, pierced head is used as a stop on the wing to hold the calipers in position.
مادة
Scales read: "Strasburger Schvech", "Polmischer Schevch", "Augspurgerschueh", "Nurmbzrger Schuech", Wiener Schuech", and "Insprugger Schuech"