The following services, and no others, may be rendered in conjunction with the automobile repair garage or service station: state inspections; lubrication; oil changes; tire servicing and repair (excluding recapping or regrooving), sale and servicing of spark plugs, batteries and distributors and distributor parts; replacement of mufflers and tail pipes, water hoses, fan belts, brake fluid, light bulbs, fuses, floor mats, seat covers, windshield wipers and wiper blades, grease retainers, wheel bearings, mirrors and the like; radiator cleaning and flushing; washing and polishing and sale of automotive washing and polishing materials; providing and repairing fuel pumps, oil pumps and lines; minor servicing and repair of carburetors; adjusting and repairing brakes; minor motor adjustments not involving removal of the head or crankcase or racing the motor; sales of beverages, packaged foods, tobacco and similar convenience goods for station customers, as accessory and incidental to principal operation; the provision of road maps and other informational material to customers; and provision of rest room facilities. All services shall be conducted entirely within a building.