mikrokujutisi (kaadrivälju) kandev läbipaistva põhimikuga kaart (nt 105 × 108 mm), mille lugemiseks on vaja eriseadet, a microfilm card or sheet used in some information storage systems which consists of a film format about 4 by 6 inches (10 by 15 centimeters) containing microimages of types and other information, with a title heading large enough to be read by the unaided eye, a sheet of film that has very small photographs of the pages of a newspaper, magazine, etc., which are viewed by using a special machine