Music practice timer - carriage style clock - need identification

Hi,

I recently acquired this clock but am pretty clueless about its details. It's 8 inches tall in a design of a carriage clock. It has several subdials, which appear to be used for tracking musical instrument practice, but that is just my theory. It has no maker's name that I could find, but does seem American based on the writing on the dial.

Would love for someone to give me some details on it, most importantly the maker, approximate age and confirm if indeed it is to be used for timing musical practice.

TIA