equipment [1]
Collective term for the materials, instruments and tools used for engraving and printing.
caliper 
Instrument that measures the stone’s thickness in order to level it.
pumice correcting pencil 
Instrument used to polish the stone and make corrections to the figure.
drypoint 
Instrument used to engrave the stone in some lithographic techniques.
litho pencil 
Grease pencil used to draw a figure on a lithographic stone.