Photomultiplier tube shield pmt shield x 5 *lot*

Photomultiplier tube shield pmt shield x 5 *lot*

I am offering five 2.25 inch diameter mu metal shields type 22P50 mfg. by Precision Mica Co. in used condition as a single lot.
Outside of some scratches to the paint, the shields are in good used condition with no noticeable dents or dings. However, note the small hole drilled into the shield - possibly to connect a socket. The shields are 5 inches in length; 2 1/4 inches in diameter.
For detailed views of a typical sample,
http://hometown.aol.com/userr5336/page46.html
The shields are offered as described; several lots are availabe.