Rabone Chesterman No.8073 600mm Spare Rule For A Combination Square

This is for a combination square so has the groove on one side.

Around 1" width and 3/32" thickness with the groove around 3/32"

Used

PLEASE NOTE, this has quite a few rust stains, particularly on one side, I have tried to show this in photo's. Far from the best but all readable and would do if you needed the longer rule.