Fixed assets are items not consumed by use. They only diminish in value: 19 O.S. § 178.1

1. Equipment costing Twenty-Five Hundred Dollars ($2,500.00) or more that is not affixed to or made a part of land and buildings
   19 O.S. § 1502
2. Information technology (IT) hardware and software (non-road/bridge) with an original cost of Five Hundred Dollars ($500.00) or more
   19 O.S. § 1502
3. Land and buildings inventoried at their initial (historical) cost