OG of SG Tee



The history of our company dates back to the late 1800s. As one of the first hydrometer manufacturers in the country, we take pride in our craft. You could say we are the Original Gangsters of Specific Gravity! We are PROUD to be not only an American Manufacturer but also a Pennsylvania Manufacturer.

Free shipping to the lower 48 states only.

If you have any questions about our products, please give us a call. (717) 453-7171
We have trained technicians waiting to answer your questions!
Our hours of operation are Monday thru Thursday 7 AM-5 PM EST.


Additional information


Small, Medium, Large, XL, XXL