Sec. 7. INSPECTIONS OF PLATS, SUBDIVISION PLANS AND LAND ENCOMPASSED; ADVICE TO COMMISSIONERS COURT AND DEVELOPERS. The county engineer when directed to do so by the commissioners court of the county, shall inspect all plats and plans of subdivisions to be recorded within said county, and make an on-site inspection of the land encompassed within said subdivision and advise the court as to the roads, drainage, sewage, and all aspects of said subdivision and terrain. The county engineer when and if required by the commissioners court, shall affix his signature to said plat along with the county judge and the commissioners court upon any plat approved and accepted by the commissioners court and filed in the county clerk's office. The county engineer will offer advice and suggestions to said developer and commissioners court in order to promote conformity with any and all rules and regulations for subdividing as laid out by the commissioners court.