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04.03.2024 New claim submitted for Railway Pulling with Teeth 04.03.2024 New claim submitted for polo ball hits with a walking mallet, 1 minute 05.11.2023 New claim submitted for Leapfrogging Chain 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!