Old Wooden Folding Rule - No. 51 1/2 S (Boxwood) 81 We've found Moon planes hard

We've found Moon planes hard to come by

Condition: the front screw is a replacement

another Sheffield (P Moor Te

torn leather to spine

It was formed to care for people who had suffered due to service in the forces during the World war

Old Wooden Folding Rule - No. 51 1/2 S (Boxwood) 81 We've found Moon planes hardAn old imperial 24" Wooden Folding Rule No. 51 1 2 S (Boxwood) marked out in inches. The rule is marked 'No. 51 1 2 S, Warranted Boxwood', it is also marked '51 1 2 S' again on the other side. We feel like this is an old Stanley Wooden Rule however we are struggling to find a reference to this model number which either means this is made by an alternative maker or it is super rare. Condition: please see photos for condition.