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A circle on the line.
The welding symbol for a spot weld, a discrete fused point between overlapping sheets.
Specifies a spot weld, a discrete fused point between overlapping sheets.
Contexts: Technical drawing
Drawn centred on the line rather than to one side, because a resistance spot weld passes through both sheets and belongs to neither side of the joint — the notation's side convention does not apply.
Contexts: Technical drawing
A circle centred on the reference line, drawn through it rather than above or below.
A fuller structured visual breakdown is not yet documented for this symbol.