Abstract: A sensor clip for positioning a sensor relative to a substrate, particularly but not exclusively a temperature sensor (e.g. a thermocouple) used to obtain a temperature profile of a part of the substrate or surrounding environment as it passes through an industrial oven. The sensor clip comprises a first part and a second part slidably mounted with respect to the first part, the parts defining a pair of jaws having opposed surfaces for engaging sides of the substrate, with jaw separation being determined by linear movement of one part relative to the other.