Tools

Ring Plates, Bolts and Ring Spanner. Ring plates, bolts and a ring spanner. Made from iron. Sizes are as follows – 1: Plates 19″ x 2 1/2″ inches. 2: Bolts 5″ x 1 1/4″ inches. 3: Spanner 15″ inches long.  These slightly curved plates were used to connect the rings iron H section girder roof supports together underground. The spanner …

Ring Plates, Bolts and Ring Spanner. Ring plates, bolts and ring spanner. Made from iron. Sizes are as follows – 1: Plates 18″ x 3″ inches. 2: Bolts 5″ x 1 1/4″ inches. 3: Spanner 15″ inches.  These straight plates were used to connect extension pieces to the rings iron H section girder roof supports together underground. The spanner has …