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19.10.2025 New claim submitted for Pull-ups, one hour, Male 05.10.2025 New claim submitted for Tyre Flipping, One Mile, Women 03.06.2025 New claim submitted for Sit-Ups, 5 Minutes Keywords: (e.g football beer mat)	Listed below are the verified claims for the record listed. Smallest Railway Chock - Current world record 1. The smallest working railway chock for a model railway is 4.15 mm long and 0.92 mm wide. It weighs 0.005 gram. It has been constructed by Heinz O. Schramm (Germany). The miniature chock has been demonstrated with a Z scale model railway on 17 April 2016 in Altenbeken, Germany.     The Book of Alternative records - World records, record breakers and more!