Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 andor C4-C12 \u03b1-olefins. A transducer in the head has a bond to the substrate and has a transducer thermal expansion rate CTE2 that is greater than CTE1. The PMOS andor NMOS transistors of the LSDC are coupled to a pair of complementary data lines. When first ends of the uprights are urged apart, their oppositely disposed second ends are urged together to grip a sample deposit to be pulled off a substrate in a tensile test. Further, the linear variable reflector system comprises a detector coupled to the sensor to detect displacement of the moveable transparent body.