As used in this article, “supplies” means any articles or things, including equipment, which are used by or furnished to any department, institution, office, board or other agency of county government.

“Contractual services” means any telephone, telegraph, postal, electric light and power service and other similar services.

Code 1950, § 15-542; 1962, c. 623, § 15.1-106; 1997, c. 587.