IBIS Wheelchair to Car Access Measuring Guide IBIS Wheelchair to Car Access Measurement Form IBIS Wheelchair to Car Access Measuring GuideNamePhoneEmailDelivery AddressAddressSuburbStatePostcodeVehicle MakeVehicle ModelVehicle YearMeasurement A (mm)Measure gap between bottom (underside) of top car door hinge to top of bottom car door hinge. The hinge must be a minimum 250mm to maximum 410mm and a flat surface and no obstructions.Measurement B (mm)Measure the distance from the ground to the top of the bottom car door hinge, this will determine if you require a small or large size IBIS unit. Ensure the vehicle is parked on a level surface.Submit Form