The T490-DK adds darkfield illumination to our hardest-working microscope. A top choice for veterinarians, breeders, & clinics, this instrument has proven reliability & optical quality. It boasts features such as a compensation-free Siedentopf head, smooth stage translation, & a precision focus system with easy tension-adjustment & vertical-lock. The Simul-Focal trinocular head provides a dedicated photo port which can be used simultaneously with both eyepieces.