It boasts a new, rugged, air and moisture tight housing, and unbreakable eyepiece ports. It is perfect for the rigors of the assembly line or any harsh manufacturing environment. This also make s the NZ virtually maintenance free. With the NZ series you will be able to view or inspect your work with unequaled clarity and know that the durability of the microscope will never be compromised. With a wide variety of Eyepieces, Focus Mount, Stand, Illumination, and auxiliary lens accessories, you will be able to find the perfect system to meet your needs.