Perfection?

We buy old work shop and factory parts that we can make into tables or lamps. Some of our customers make tables and lamps, too, so sometimes we sell the parts to them.  These stands were designed by George S. Weinerth of Reading, PA, an inventor with many patents for textile industry machinery. He also invented spark plugs. We like that these stands are cast iron and adjustable. Clearly, they are Perfection. But what are they?