A relative-distance pickup, includes a housing, a spring disposed in the housing, a feeler tip disposed in the housing and movable in longitudinal direction of the housing against the spring, an indicating device for registering relative motion of the feeler tip with respect to the housing, the feeler tip being subdivided transversely to the longitudinal direction of the housing forming first and second feeler tip parts, the second part having a stop, the first part being connected to the indicating device and the first part having a remote control drive for moving the first part against the stop.
A test apparatus for measuring operating characteristics of a position sensor coupled to a parison mold plunger for glass gob weight control in a press-and-blow individual section glassware manufacturing machine includes circuitry for connection to the sensor to provide a signal as a function of electrical characteristics thereof, a switch network for selecting among a plurality of differing electrical characteristics to be measured, and a display responsive to the sensor signal for displaying the selected and measured electrical characteristic of the sensor to an operator. The measurement circuitry includes a measurement bridge for measuring resistance characteristics of the sensor, and an amplifier circuit for measuring sensor output as a function of position of the plunger. The switch network selectively connects the sensor signal to the measurement bridge and amplifier circuit in differing modes of operation of the test apparatus.
