In this article, we report on a rapid infrared imaging method to measure the thickness and uniformity of water-dilutable two-dimensional macroscopic liquid objects. The method is based on the near-infrared absorption of water at 1440 nm or 1930 nm wavelength. As an example, the method is applied for nondestructive inspection of the thickness and uniformity of polyvinyl (PV)-based polyvinyl alcohol (PVA) and polyvinyl acetate (PVAc) adhesives, which are used in wood products. The method was also found to be able to observe the drying process of the adhesives.