A roadcase or roadbox containing tools and/or supplies. Usually designated by department: electric's workbox, audio workbox, carpenter's workbox, etc.
See http://www.rrcases.com/workmain.htm for some examples. See also Knaack box, a staple of the construction industry.
See http://www.rrcases.com/workmain.htm for some examples. See also Knaack box, a staple of the construction industry.