Anyone remember this and use, I did...
Attachment 580603 (http://www.bikeforums.net/attachment.php?attachmentid=580603)
Rode many miles with one in the late 70's early 80's. BRAN, RAGBRAI and many centuries. How did we ever survive ??
Fast forward to 2017. How can we live without our smart phones, smart watches, GoPro...