In scaffolding, a joint pin or spigot, is an internal connection used for joining two metal tubes together, end to end. Joint pins are fitted with a screw by which the device can be expanded to grip the inside of the tubes firmly. Research Joint Pin
In scaffoldinga sleeve coupler is a coupler used to join two tubes end to end, and which grips the outside of the tubes as opposed to a joint pin which grips the internal surfaces of the tubes to be joined. Research Sleeve Coupler
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Joint Pin
