Whenever you want to create a soft-looking but hard-wearing path or a sitting area without spending a fortune, gravel is the option that springs to mind. It is a bit of a Marmite subject, but that may be because many people donât realise how many types of gravel there are and the different ways they can be laid.
In this article we will explore the use of the UNO type fitter and the UNO fitter adapter. An UNO fitter is a large threaded ring in the middle of the fabric shades top tripod. It is designed to thread onto UNO sockets. UNO sockets have the same matching thread on their socket shell. The most common application for this type of shade and holder is the bridge arm floor lamp.
UN = Basic Unified National thread series. UNR = Basic Unified National thread series with external thread. controlled root radius. UNJ applies to both internal and external threads, it has a larger. root radius and is a stronger thread than UN or UNR. UNR applies to external thread only, for internal threads use UN. UNR threads have a single difference from UN threads, a mandatory root. radius. UN threads have a flat or optional rounded root contour at the minor.