Pinax

A pinax (plural: pinakes) was a tablet or board In ancient Greece and Rome.πίναξ,
Henry George Liddell, Robert Scott, A Greek-English Lexicon, on Perseus Digital Library 

It was used for writing, or for other purposes. These tablets were usually made of wood, terracotta, marble or bronze. Painted pinakes were given to the gods, or fixed on tombs. In common usage, a  pinax was a wax-covered writing tablet. They were used from the 8th to the 6th century BC.

In Book 10 of his work De Architectura, Vitruvius describes a hydraulic organ, in Chapter 8, section 3, he writes:
"In each channel are fixed stops, that are connected with iron finger-boards; on pressing down which, the communication between the chest and the channels is opened. Along the channels is a range of holes corresponding with others on an upper table, called πίναξ (pinax) in Greek". 

 References 

 Boardman, John 1956. Painted funerary plaques and some remarks on prothesis. Annual of the British School at Athens.  50, pp 51–66.

Category:Ancient Greece
Category:Writing media
Category:1st millennium BC