Ring Plates, Bolts and Ring Spanner

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 has a pointy end used as a podger to help align the plates to insert the bolts through. This spanner also has an hole through it so as to put it on a tool bar!