Surveying is all about dead-on accuracy and absolute precision. Having been in the industry for more than 115 years, Nedo knows this perfectly well. That is why you can be sure that each of Nedo’s products is designed for achieving these exact results. Made from the most suitable materials and calibrated to perfection from end to end, Nedo’s invar grade rods are the excellent example of this brand’s manufacturing prowess. These ever-reliable grade rods earned the trust of many professional surveyors not only for their flawless precision, but as well as their superb solidity and workability.