Sun tack and sender??

[P.J.]

Picked this up yesterday and it looked interesting. It is a sun tack and sender in a neet box and is in great original condition. Does anyone know what this is and what it could of been used for????Did someone make this up or was it purchased ??
PJ
http://i265.photobucket.com/albums/ii234/suprss70/DSC00288.jpg

[John Brown]

The EB-7A sender has really limited usage.

http://www.leverfamilysite.com/images/PD...nsmitter_EB.pdf (http://www.leverfamilysite.com/images/PDF_Files/Sun_Tach_ST-500_SST-700_Models_%20RC_SST_and%20Transmitter_EB.pdf)

Looks like it was probably used as a test unit for an outboard motor repair shop.

[P.J.]

Thanks John
PJ