This system is fast and economical, as well as weather resistant and cost effective. The SIGNUMAT hammer and tags are used for the clean and durable marking of both length and section cut lumber. The consecutively numbered tags have the same function as car number plates for example. This means that you always know exactly which lumber belongs to you. With the newest SIGNUMAT product, the bar code tag, you can automatically record the consecutive numbering with a bar code =scanner. Other SIGNUMAT products include a plastic hand-axe for felling lumber, as well as light metal calipers for measuring section cut lumber.