Wild N3 42x power High Accuracy Precision Level

Description

Up for sale is a used Wild N3 Precision level with a strong telescope magnification of 42x. The Wild N3 Precision Level is an outstanding instrument for all first order leveling work. Designed originally for geodetic networks it has been adopted universally as the ideal level for the precise measurement required in dam deformation surveys, industrial installations, aircraft fuselage assemblies and vertical displacement determinations. The plane parallel plate micrometer is mounted in front of the objective lens as a built-in feature of the N3 and is available in metric and non-metric models, giving reliable and simple estimation to 0.01 mm and 0.0005 inch, respectively. The reticule has part of its-horizontal line in the form of two wedge-shaped lines, converging towards the center allowing the staff graduation to be split or straddled, depending on the circumstances and on which part of the cross-hair is used. Collimation errors are corrected by means of a rotation of the objective lens cover glass which enables an exceptionally sensitive, but simple, adjustment to be made. Interchangeable eyepieces provide the possibility of observing with either an inverted or an upright image.
1961 Wild Heerbrugg N3 old style
Figure 1: The 1961 Wild Heerbrugg old style N3 level.For a new product development of my company I needed two Wild N3 levels. A geodetic instrument dealer here in the Netherlands had two them in stock; one from about 1962 and this one from 1961. Despite being the oldest of the two it is in an amazing brand new condition, due to the fact that it has only been used for educational and research purposes at the Delft University.
The instrument is of Swiss origin, from the same manufacturer as the N2 and NA2 in the collection. The N3 was the top model of Wild Heerbrugg and - compared to other uncompensated levels - still is unsurpassed in accuracy.
The N3 was originally developed by Wild in 1926 and modernised in 1940.