Multiple choice A standard microscope slide size for mounting, measures about 95 mm x 65 mm and 1 mm thick 75 mm x 25 mm and 1 mm thick 50 mm x 25 mm and 1 mm thick 100 mm x 75 mm and 1 mm thick 85 mm x 30 mm and 1 mm thick Reveal answer Fill a bubble to check yourself B Correct answer Explanation A standard microscope slide measures about 75 mm by 25 mm (3″ by 1″) and is about 1 mm thick.