Blackboards; Globes; Markers; Paper; Stickers; Adhesive tape dispensers for household or stationery use; Adhesive paper labels; Binder clips; Blackboard erasers; Desk mats; Desk mounted stationery cabinets; Desk stands and holders for pens, pencils, and ink; Document file racks; Drawing instruments; Drawing rulers; File trays; Fingerstalls being office requisites; Gift boxes; Hat boxes of paper; Heat transfer paper; Magnetic boards; Merchandise bags; Office stationery; Paper notebooks; Paper ...

analog to digital converter that allows students to use computers to gather experimental data during laboratory exercises