Polar Planimeter of Fixed Scale. Amsler

Description:
- Primitive Fixed Scale Polar Planimeter, with two articulated arms and its measuring mechanism, is from the end of the Second Half of the 19th century. This type of staircase was manufactured until the beginning of the First Half of the 20th century.
- It has no Brand or Registration that identifies it.
- This Amsler Polar Planimeter corresponds to the first Planimeters invented and manufactured by the Swiss Jakob Amsler-Laffon in 1854, which is why the one in question is most likely made in Switzerland at the Amsler factory.
- It has the original box, which is made of wood lined with a thin black fabric on the outside and green velvet inside. Nor does it have any label or badge that can guide us on its manufacture. It was in very bad condition, so it has been restored. The lid has part of the fabric covering separated from the wood, having chosen to leave it as it is.
- The Fixed End Arm has a very fine and very short pointed needle at the mentioned end, in order to minimize damage to the paper. This needle is nailed and remains fixed at one point, which is helped with a small weight on it. At the opposite end is the joint with the other Mobile End Arm.
- The Mobile End Arm has a blunt-pointed needle at the mentioned end, so that it can slide along the perimeter of the surface to be calculated, for which the aforementioned end is held with the fingers, by means of a tiny spike or shaft. The joint with the other Fixed End Arm is located at the opposite end.
- The Measurement Mechanism with its Scales is supported by the Mobile End Arm, and is placed between both Arms next to the joint.
- Both the Arms and the Measurement Mechanism, have coined the Number 6 with a dot randomly located to their left, or alternatively the Number 9 if we consider that the dot is placed randomly to its right. This Number should correspond to the Type or Class of Planimeter, possibly depending on the Fixed Scale you have designated.
Measurements:
Planimeter:Long:16,3 cm.
Width:3,5 cm.
High:2,6 cm.
Box: Long:20,8 cm.
Width:5,0 cm.
High:3,7 cm.
Weight:
Planimeter:112 gr.
Box:136 gr.

Conservation and Damage:
- The state of conservation is very good, although it has areas where there are signs of oxidation, so it has been cleaned.

Comments:
- Both the Measures and the Weight are approximate.
- It is quite rare to find, since they are from the first Planimeters that were made.
- Very interesting as a collection piece and decorative element.
- Spectacular in an illuminated niche, with minimalist decoration.
- Because the differences in shades between photos and reality are inevitable, it should be borne in mind that the color tones of the photos are not exactly the same as the tones of the real colors.
- The Object presents the wear and tear of its time, as well as some stains. It has small damage.
- The data provided here are untested personal opinions.
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