Eraser: a device, as a piece of rubber or cloth, for erasing marks made with pen, pencil, chalk, etc.
Calculator: a small electronic or mechanical device that performs calculations, requiring manual action for each individual opertion.
Pen: a long, thin object used for writing or drawing with ink.
Ruler: a strip of wood, metal, or other material having a straight edge and usually marked off in inches or centimeters, used for drawing lines, measuring, etc.
Stapler: a small device that you can hold in your hand or use on a table to push staples through pieces of paper.
Pencil: a long, thin object, usually made of wood, for writing or drawing, with a sharp black or coloured point at one end.
Puncher: a device used for making holes in pieces of paper so that they can be fastened together.
