Two Models, of Cross-Half Secret Bridle carpentry joint, joining two beech-wood blocks: one a ‘Socket’, the other a ‘pin’, both stamped with ‘32’, by Polytechnisches Arbeits-Institut J. Schröder Atkiens-Gesselleschaft, Darmstadt, Hesse, Germany, 1868
Model, of Cross-Half Secret Bridle ‘Socket’ carpentry joint, on single beech-wood block: stamped with ‘32’, by Polytechnisches Arbeits-Institut J. Schröder Atkiens-Gesselleschaft, Darmstadt, Hesse, Germany, 1868
Model, of Cross-Half Secret Bridle ‘Pin’ carpentry joint, on single beech-wood block: stamped with ‘32’, by Polytechnisches Arbeits-Institut J. Schröder Atkiens-Gesselleschaft, Darmstadt, Hesse, Germany, 1868
