Kern & Co. Aarau

Planimeters

Kern Planimeter

Polar Planimeter

Marking: Kern & Cie. Aarau Suisse
(Maker: Amsler & Co.)
Serial Number: 21146
Year: ca. 1895
Size: 28.5 x 5 x 3.5 cm
Kern Planimeter

Polar Planimeter

Marking: Kern & Cie. Aarau Suisse
(Maker: Amsler & Co.)
Serial Number: 34794
Year: ca. 1904
Size: 28.5 x 5 x 4 cm