| Strength Tester |  Kicker France | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Germany | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Greece | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Holland | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Italy | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Liverpool | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Manchester | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Norway | 2011 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Poland | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Real | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Romania | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker USA | 2008 | Kalkomat Krakow, Poland |
| Strength Tester | Kicker Whistle | 2004 | Kalkomat Krakow, Poland |
| Strength Tester | Kid's Box | 200? | Unknown |
| Strength Tester | King of the Hammer II | 2013 | Andamiro Co., Ltd. |
| Strength Tester | Kinnhaken | 1925 | Unknown |
| Strength Tester | Knock Down | 1981 | NAMCO, Ltd. Japan |
| Strength Tester | Knock Down 2001 | 2001 | NAMCO, Ltd. Japan |
| Strength Tester | Knock Down 90 | 1990 | NAMCO, Ltd. Japan |
| Strength Tester | Kraftmesser Olymp | 19?? | Bedurke, A. Berlin, Germany |
| Strength Tester | Le Boxeur Blanc | 1910 | Chatounovski, A. Paris, France |
| Strength Tester | Le Boxeur Noir | 1910 | Unknown |
| Strength Tester | Le Cochon Électriseur | 1905 | Maurice, A. & Mole, Ch. France |
| Strength Tester | Learn How to Punch the Bag | 1941 | ESCO Exhibit Supply Co. Chicago, IL, USA |
| Strength Tester | Lift - I'll Tell Your Strength | 1910 | Caille Bros. Co., The Detroit, MI, USA |
| Strength Tester | Lift-O-Graph | 1938 | International Mutoscope Reel Co., Inc. New York, NY, USA |
| Strength Tester | Lighthouse Grip | 1932 | Quested Automatics |
| Strength Tester | Lighthouse Grip Tester | 1924 | Globe Amusement Machine Co. |
| Strength Tester | Lion Head Lung Tester | 1904 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | Love Letter Box | 1900 | Lee, Nelson |
| Strength Tester | Love Spirometer | 1902 | Unknown |
| Strength Tester | Lung Tester | 1893 | Beckwith, G.R. & McCollum, W.F. Minneapolis, MN, USA |
| Strength Tester | Magic Hammer | 200? | Magic Play Kalisz, Poland |
| Strength Tester | Magic Soccer | 200? | Magic Play Kalisz, Poland |
| Strength Tester | Mascot Grip or Blow | 1908 | Caille Bros. Co., The Detroit, MI, USA |
| Strength Tester | Mega Boxe | 19?? | Zamperla, Antonio Italy |
| Strength Tester | Mercury Athletic Scale Counter Grip model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Mercury Athletic Scale Deluxe model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Mercury Athletic Scale Lift Grip model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Mercury Athletic Scale Midget Counter Grip model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
