Everything Gadgets Vintage Tech

MSM-5A Mosaic Readout Indicator

Note: this is a follow up from post: http://www.ineedcaffeine.com/content/2009/08/ebay-find-msm-5a-incandescent-display/

I received my MS-5a Mosaic readout displays from the Vintage Technology Association today.  Not only did they include the two displays, but there were also a few other extras included as well.  Nice work, guys!

The units themselves are rated for 3v, 50 mA but I can’t tell if that is 50 mA per segment or total.  Powering them is simple, all you need is two AA batteries and a few alligator clips.  The top set of fingers provide the common connection and the remaining connectors power the individual elements and the decimal point.

The markings on the unit:

MOSAIC INDICATOR MSM-5A Lamp  3v 50 MA.  ALCO ELECTONIC PRODUCT. INC LAWRENCE MASS

Markings on the box:

ALCO ELECTRONIC PRODUCTS, INC. Lawrence, MASS.  JAPAN.  MOSAIC READOUT INDICATOR MODEL MSM-5A VOLT 5. (note: It looks like the 5 is scratched out…which makes sense.  The units themselves are marked for 4V).

The display is smaller than I anticipated.  I’ve included a video to help you get a better idea of the size of the unit.

I did find one other source of these displays: SurplusShed.com  The version I have they are selling for $5/each.  They also have a MS-250 which appears to be the same thing except with a red front and a different connector on the rear.   Check out the links below for more info.

Video Demo:

[flv]http://www.ineedcaffeine.com/videos/mosaic-display.flv[/flv]

Photo Gallery:

Links

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