Improve Learning levels with handy desk References. Simply write in student names and tape to student desks for year-round use. Primary desk plates include photo Alphabet line, name plate with left and right handprints, 12'' (30 cm) ruler, number line (0 to 30), shapes and colors, money, and hundred Chart. Measures 19 x 5 inch (48.3 x 12.7 cm). includes 36 per package.