Quick Answer: Used on the wire of a Wheatstone bridge or potentiometer, this pencil jockey makes contact through a brass tip while the user holds an insulated handle; it is about 120 mm long.
Last updated: October 2026
Key Features
For Wheatstone bridge and potentiometer experiments
Insulated handle with brass contact
Brass terminal with 4 mm socket
Heavy lock-type brass-plated terminal for the connecting lead
Overall length approximately 120 mm
Technical Specifications
Specification
Value
Handle
Insulated
Contact
Brass
Terminal
Brass, 4 mm socket; heavy lock-type brass-plated terminal for lead
Overall length
120 mm approx.
About This Product
In a Wheatstone bridge or potentiometer practical, the jockey is pressed onto the wire at different points until the galvanometer shows no deflection, with the user holding it by the insulated handle. The brass terminal has a 4 mm socket, and a heavy lock-type brass-plated terminal is provided for connection with a lead.
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