This vintage Wild Heerbrugg Level N2 59138 from Switzerland is a must-have for collectors and enthusiasts of surveying equipment. With its classic design and durable construction, this level is perfect for accurate measurements in the field or laboratory. The level comes with its original case for safekeeping and transportation.

The Wild N2 developed from Wild Heerbrugg's very first instruments, the Wild NII and Wild NKII levels. The differences between the initial NII and the current model are small. The telescope was extended with a fixed sun shade, while the coincidence vial now is fully encapsulated and read through a microscope (see figure 3). In 1969 the instrument was completely redesigned as can be seen from the 1971 version of the instrument in the collection.

Accuracy

Compared to the 1926 Wild NKII little has changed. The telescope has grown to 193 millimetres to facilitate a small sun shade. Its magnification power is specified as "24 or 28 times" (not sure how to interpret this and how much this is for the model shown here). The view is still inverted and has two stadia hairs with a multiplication constant of 100 along the vertical cross-hair.

The coincidence vial has an accuracy of 30" per 2 millimetres run, which is less than the 20" of the 1926 Wild NKII. Levelling the line of sight should be possible with an accuracy of approximately 0.5".1 Levelling a kilometre double run should be possible with an accuracy of 2.0 millimetres.

The instrument

Judging from its looks this N2 has had quite a working life. It came complete with its original container and, despite its looks, still is in full working order.

Crafted with precision and care in Switzerland, this level is a testament to the country's reputation for quality and innovation. Whether you're a seasoned surveyor or a collector, this Wild Heerbrugg Level N2 59138 is a valuable addition to your collection.