According to this white paper by Dr. Peter Green "Number 2 Pencils are the Worst Possible Investment for Manufacturing Companies". Ridiculous you say: you can buy a box of fifty pencils for $8 on Amazon.
It is not the pencils themselves that are the problem, however, but what they imply, which is that the organization is still using paper forms followed by manual keyboard data into Excel spreadsheets and/or its accounting/ERP system to track its inventory and its work-in-process. This can cost a manufacturing plant over $100,000 per year in unescessary labor costs plus result in expensive mistakes and loss of future customer orders due to late shipments.
To learn more about this topic, please read the whitepaper "Why Number 2 Pencils are the Worst Possible Investment for Manufacturing Companies!" by Dr. Peter Green.