Instrumental plumb bob and construction. Complete. 19Th Century

Description:
- Plumb bob, both construction and instrumental, from the first half of the 19th century, complete.
- The bronze weight is in the form of a cylinder and cone, with three horizontal striated bands, and on the upper part two small bands, also striated.
- Very curious and rare. The lower part can be unscrewed to reverse its position, leaving the conical part visible. Once used, it is unscrewed again with the apex of the cone towards the inside of the cylinder, for it"s protection.
- The thread is very large in size and diameter, with a small thread and pitch.
- The nut is very curious, square and flat, being original from the plumb bob.
- We have found the following inscription on the nut: UNIS RIV.
- Apart from the inscription on the nut, we have not found any distinctive mark or contrast, which could provide information about the place where it was made, the manufacturer"s details, as well as other data.
- The plumb bob was probably made in southern Europe.
Conservation and damage:
- The plumb bob is in a good state of preservation, although the Weight has several knocks and scratches, both on the edges and edges, as well as on the faces.
- A very good and beautiful patina has been preserved throughout the Plumb bob.
- The quality of the casting and the execution of the Weight is very good.
- The Plumb bob shows wear typical of it"s age.

Comments:
- Both the Measurements and the Weight are approximate.
- Very interesting as a collector- The tones of the colours in the photos are not equal to the tones of the real colours.
- The object for sale is the one that corresponds to the photos. The description is not a detailed exposition of the object.
- The data provided here are personal opinions not contrasted.