Abstract:
A float glass system (10) includes a float bath (14) having a pool of molten metal (16). A chemical vapor deposition coater (32) is located in the float bath (14) above the pool of molten metal (16). The coater (32) includes at least one low-coherence interferometry probe (38) located in or on the coater (32) and connected to a low-coherence interferometry system (36). Another low-coherence interferometry probe 138 can be located outside an exit end of the float bath (14) and connected to the same or another low-coherence interferometry system (36).