| Strength Tester |  Mercury Athletic Scale Single Grip model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Mercury Athletic Scale Standard model | 1947 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Mercury Athletic Scale Twist Grip model | 1948 | Mercury Steel Corp. Detroit, MI, USA |
| Strength Tester | Monarch Penny Back Machine | 1903 | Rosenfield Mfg. Co. New York, NY, USA |
| Strength Tester | Mr Hammer | 2011 | G-Look Amusement |
| Strength Tester | Mr. Box | 2012 | G-Look Amusement |
| Strength Tester | Mr. Pro-Wrestler | 198? | NAMCO, Ltd. Japan |
| Strength Tester | Muscle Judgment | 2006 | Atlus Co., Ltd. Japan |
| Strength Tester | Muscle Tester | 1903 | Rosenfield Mfg. Co. New York, NY, USA |
| Strength Tester | National Gripmeter | 1947 | American Gripmeter Co., Inc. Long Island, NY, USA |
| Strength Tester | New Century Strength Testing Machine | 1900 | Midland Mfg. Co. Chicago, IL, USA |
| Strength Tester | New Champion Kick | 2002 | Yuvo |
| Strength Tester | New Electric Chimes Lifter | 1905 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | New Lifter | 1904 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | New Lifter Alt. model? | 1905 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | New Lifter Owl Lifter | 1901 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | New Searchlight Lifter | 1905 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | Olympia Puncher | 1906 | Caille Bros. Co., The Detroit, MI, USA |
| Strength Tester | Oomph! | 1940 | Western Products, Inc. Chicago, IL, USA |
| Strength Tester | Over the Top | 1987 | Jeffrey Bros. |
| Strength Tester | Over the Top | 1988 | Banpresto Japan |
| Strength Tester | Peerless Penny Back | 1903 | Rosenfield Mfg. Co. New York, NY, USA |
| Strength Tester | Penka Silomer | 19?? | Unknown Russia |
| Strength Tester | Photo Punch 2000 | 2000 | Oper-Video, S.A. |
| Strength Tester | Pneumatic Punching Machine | 1904 | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | Pneumatic Punching Machine Alt. model | 190? | Mills Novelty Co. Chicago, IL, USA |
| Strength Tester | Popeye the Sailorman | 2009 | Coast to Coast Ent., LLC Sayreville, NJ, USA |
| Strength Tester | Prüfe Deine Kraff | 192? | Unknown Germany |
| Strength Tester | Puck | 193? | Freund, E. Leipzig, Germany |
| Strength Tester | Punch Belly | 1992 | Fun Merchants Carlstadt, NJ, USA |
| Strength Tester | Punch Down | 2000 | Yuvo |
| Strength Tester | Punch-A-Bag - Deliver the Punch | 1910 | American Mutoscope Co. New York, NY, USA |
| Strength Tester | Punching Bag | 1962 | SEGA Enterprises, Ltd. Tokyo, Japan |
| Strength Tester | Punching Machine | 1903 | Rosenfield Mfg. Co. New York, NY, USA |
| Strength Tester | Punching Striking Machine | 1889 | Schultze, Gustav F.W. San Francisco, CA, USA |
| Strength Tester | Punching Try | 2007 | Atlus Co., Ltd. Japan |
| Strength Tester | Raise the Devil | 1926 | Globe Amusement Machine Co. |
| Strength Tester | Red Top Lifter | 190? | Caille Bros. Co., The Detroit, MI, USA |
| Strength Tester | Reliance | 1907 | Rosenfield Mfg. Co. New York, NY, USA |
| Strength Tester | Reward Paying Punching Bag | 1903 | Mills Novelty Co. Chicago, IL, USA |
