Pipe fittings include many components that connect pipe ends for in-line, offset, multi-port, and mounting configurations.

Transistors are electronic devices made of semiconductor material that amplify a signal or open or close a circuit.

Sound level meters and noise dosimeters are used in sound and noise analysis. Applications include industrial safety, traffic noise studies, and scientific noise measurement.

Small-signal bipolar transistors (BJT) are semiconductors that amplify small AC or DC signals. They consist of a base n-type or p-type layer sandwiched between emitter and collector layers of the opposite type.

Power bipolar transistors are semiconductors in which a base n-type or p-type layer is sandwiched between emitter and collector layers of the opposite type. The junctions between the semiconductor sections amplify weak incoming electrical signals.

Bipolar RF transistors consist of an N-type or P-type layer sandwiched between two layers of the opposite type. They are designed to handle high-power radio frequency (RF) signals in devices such as stereo amplifiers, radio transmitters, and television monitors.

MOSFET RF transistors are metal-oxide semiconductor field-effect transistors (MOSFETs) that are designed to handle high-power RF signals from devices such as stereo amplifiers, radio transmitters, TV monitors, etc.

Darlington transistors (Darlington pairs) are semiconductor devices that combine two bipolar transistors in a single device. They provide high current gain (commonly written ß) and require less space than configurations that use two discrete transistors.

RF transistors are designed to handle high-power radio frequency (RF) signals in devices such as stereo amplifiers, radio transmitters, and television monitors.

Specialty transistors are specialty or proprietary products and accessories related to transistors.

Unijunction transistors (UJT) are three-terminal devices that exhibit a negative resistance characteristic.

Programmable uni-junction transistors (PUT) are three-terminal thyristors that are triggered into conduction when the voltage at the anode exceeds the voltage at the gate.

Fiber optic rotary joints (FORJ) are the optical equivalent of electrical slip rings. They allow uninterrupted transmission of an optical signal while rotating along the fiber axis

Calibration standards and reference sources include any source that can provide a reference for the calibration of an instrument or comparison of a material or component.

Tilt sensors, switches and inclinometers generate an artificial horizon and measure angular tilt with respect to this horizon. They are used in cameras, aircraft flight controls, automobile security systems, and special switches.