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3M Model 131 Optically Programmable Signal 1980 Programmable Signal built by 3M. The visors and doors were repainted by me. Keywords: Traffic_Lights

3M Model 131 Optically Programmable Signal

1980 Programmable Signal built by 3M. The visors and doors were repainted by me.

IMG_0436.JPG IMG_0437.JPG IMG_0438.JPG IMG_0439.JPG IMG_0440.JPG
File information
Filename:IMG_0438.JPG
Album name:basilicon89 / My Traffic Signal Equipment
Keywords:Traffic_Lights
Filesize:721 KiB
Date added:Jul 04, 2011
Dimensions:3000 x 2250 pixels
Displayed:300 times
Color Space:sRGB
DateTime Original:2011:06:24 21:20:49
Exposure Bias:0 EV
Exposure Mode:0
Exposure Time:1/60 sec
FNumber:f/3.2
Flash:Red Eye, Auto-Mode
Focal length:7.3 mm
ISO:200
Make:Canon
Max Aperture:f/3.2
Model:Canon PowerShot SX100 IS
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=7191
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