In alt.home.repair, on Sun, 23 Aug 2015 21:32:06 -0400, micky
wrote:

Designed for 12-24 VDC LED strip
lights like our CAT#s LS-12-CW, NW,
WW. Clearly-marked screw-clamp
input/output terminals. Rotary
adjustment. 3.5" x 2.35" x 2.25" high
(including knob). Mounting holes on
1.6" x 3.1" centers.
CAT# DMR-8 $19.95 each
12-24 VDC 8A DIMMER

I don't know how well it works.

Comes from the All Electric catalog. They used to mail them often,
printed on newsprint with a little bit of color. I bought from them but
then lost track of them when they stopped mailing catallogs.

They sell mostly small parts, and 10 years ago, they were usually cheap.

The link on the first line will get you a pdf file. or they'll mail you
paper.
http://www.allelectronics.com/make-a...catalog/1.html

I went through the rest of the pdf catalog and it's even better than it
used to be, longer, nothing very expensive, a wide range of things or
many sorts. Not too much for outdoors but plenty of small parts and a
few not so small for indoors.