As used in this article “commissioner” includes a commissioner who is employed pursuant to Section 2124.

The board of supervisors shall provide a suitable office for the commissioner, and shall furnish and equip his office with all necessary furniture, supplies, and effects for the proper discharge of his duties.

The board of supervisors may also provide the commissioner with all necessary field equipment for the proper discharge of the duties of his office.

All expenses which are ordered by the board of supervisors for the office, furniture, supplies, effects, and equipment for the commissioner are a county charge. The board of supervisors shall allow and pay such expenses out of the general fund of the county.