Interesting find. A closer photo of the markings on the brass plate might help.help with weird old level
I am having a great deal of trouble finding any info on the below pictured Stanley ruler & level co. new Britain Conn level was hoping the brain-trust on this sight may help steer me on a straight and level (pun intended) path to identification, thank you in advance, Louis smith
The rounded ends are curious. Makes me suspect that it may have been modified by someone along the way. The dimples on the end look like they could have been where the thing was put on a lathe.
Or the other thing those points may have been used for is to mount it on centers on a surveyor's theodolite similar to this metal one.