Record clamp weights, adjustable, more versions

**Updated 05DEC2019**

There are many versions of record clamp weights, this is merely my take on them.

All are trying to achieve basically the same thing- to keep the record flat and to help grip
the turntable surface.
Additionally, they may add some improved stability and damping to the rotating platter which in turn may have acoustic benefits.

Commercial non-adjustable versions can range from the $20's to rather absurd, depending upon how fancy they are.
And commercial adjustable versions are typically even higher priced.
Essentially they are all just weights though.

There are now four designs using a top shell and a threaded-in base.

**Version 1, small diameter-**
The smallest version can contain up to about 185 grams (6.5 ounces) of standard BB pellets.

**Version 2, large diameter-**
The larger diameter version can contain up to around 275 grams (9.8 ounces) of standard BB pellets.
It has a lower profile and larger diameter that may be easier to use on so