[Amps] ARCO compression trimmer caps

[Arthur Moe]

Radio WC6W wrote:
> 

> 
>    You may check the thread pitch by using a 4-40 screw as a thread
> gauge.
> 
>    Then measure the diameter with a micrometer then look up the specs for
> a 12-40 in a Machinery's Handbook to confirm.
> 
>    Or you can.... trust me.   :-)
> 
> 73 & Good morning,
>    Marv  WC6W
> 

Keep in mind when measuring, that most threads "major" diameter is a few 
thousands undersize.  This is done to avoid having a sharp pointed thread that 
becomes "ragged" ( not smooth ) when finished. 

Art
KB7WW