A 60mm watch glass is a circular, slightly concave piece of glass used primarily as laboratory glassware for chemistry and biology, though the term can occasionally refer to an oversized horological pocket watch crystal replacement.Common ApplicationsLaboratory Beaker Cover: Prevents dust and contaminants from entering a beaker while allowing visual monitoring.Evaporating Surface: Holds small volumes of liquid for evaporation or crystallization over a burner.Weighing Dish: Acts as a stable, non-reactive surface for measuring out solids and powders on a scale.Sample Holder: Temporarily houses small specimens or chemical compounds during observations under low magnification.