Yes. To get an accurate ID you should provide accurate measurements. You can get a set of digital calipers at most auto parts stores for around $20.00. They are an invaluable tool in our hobby. This is the one I bought: Performance Tool W80152 - Caliper | O'Reilly Auto Parts
If you don't mind my asking, what part of Maryland are you in? I was born and raised in Hagerstown.
It's a 32 caliber, measured it with a micrometer