We have a Rand McNally for rvers. Large screen and can set camper heights, weights, width. Keeps you off low weight bridges and low overpasses thou I don't solely depend on that. It is no more accurate than info entered into it.
2006 Mobile Suites 32TK3 SOLD 2003 Teton Grand Freedom, 2006 Freightliner Centry 515 hp Detroit 60 Traveling USA welding pipe