Airguide Tachometer advertising

you can purchase some NOS ones here: http://www.classicboatwork.com/classicparts/gauges/airguide/airguide.html

See more tach advertising here: http://justacarguy.blogspot.com/2009/05/stewart-warner-guage-advertising.html and http://justacarguy.blogspot.com/2009/05/sun-tachometer-ads-from-1950s-and-60s.html