J. Amsler - Planimeter - Brass - 1850-1900

Very early J. Amsler planimeter – ca. 1855–1860 – serial number 144 – in original case

Offered: an exceptionally early and rare polar planimeter from Swiss engineer J. Amsler, from the early period of planimeter production (ca. 1855–1860). This specimen bears the very low serial number 144, indicating an instrument from the first generations ever produced.

The planimeter is made of brass and is in a beautiful, original condition. The instrument is supplied in the accompanying wooden storage case, including various accessories and original note cards/instructions. Such complete sets from this early period are rare and highly sought after by collectors of scientific instruments.

Planimeters were used in the 19th century to accurately determine areas on maps and technical drawings and formed an important step in the development of measuring instruments within cartography and engineering.

Details:
- Maker: J. Amsler (Switzerland)
- Type: early polar planimeter (Type 1)
- Serial number: 144
- Dating: ca. 1855–1860
- Material: brass
- Includes: original wooden case and accessories

Condition:
In good, original condition with normal signs of use appropriate to age. Mechanism appears complete and well preserved.

An extremely rare and historically important instrument, suitable for collectors, museums or enthusiasts of the history of science.

Note: without a ruler.

Carefully packed and insured for shipment.