Glastonbury Southern Gage (GSG)



All Glastonbury Southern Gage products are manufactured in the USA by some of the best American Gage Makers.


Glastonbury Southern Gage was formed in 1995 when two of the largest and oldest gage companies, Glastonbury Gage and Southern Gage, were united under one owner. Glastonbury Gage was founded in 1964 in Glastonbury, CT by individuals who had trained at Pratt Whitney Machine. From these beginnings, Glastonbury Gage has continually increased its product offering and services.

A renowned, quality provider of all types of cylindrical products.

Product Areas

  • Rings
  • Plug Gages

Glastonbury Southern Gage (GSG) Products