I was recently in a shop and found this Fischer tennis racquet from the mid 1980s. There is a screw-type adjustment mechanism in the end of the handle that allows the string tension to be adjusted by the player using a particular key or a tool. See the photos and descriptions in these two sites:
http://tennishistory.com.au/2012/02/unusual-vintage-tennis-racquets-3/
http://www.80s-tennis.com/pages/fischer-kingsize-tuning.html
This racquet looks interesting but is a bit before my time. Do any members have any further details about this racquet apart from that contained in the above websites? Additionally, does anyone have an extra key or tool used to adjust the string tension? I suspect this key or tool will be rather rare but I thought I would ask.
Thanks.
