Slide-projector produced in Budapest, Hungary by Gamma Finommechanikai és Optikai Művek Nemzeti Vállalat (Gamma Precision Mechanics and Optics National Works Company) in the 1950s. The appliance was produced from the second half of the 1950s till the mid of the 1960s; initially under the name "P-419 Mikro-Diavetítő" ("P-419 Micro-Slide-projector"), later it was called "P-248 Nagyteljesítményű Diavetítő"("P-248 High performance-Slide-projector"). The massive device was designed for professional use and it came with an also massive carrying case. It can project normal- and leica slide films, framed slide pictures, and microscope slides.