Glastonbury Southern Gage 1 year ago ID: #337789 Listed In : Manufacturing & Distribution 87 Upton Rd. Colchester, CT 06415 860-537-7340 https://www.gsgage.com/ [email protected] Facebook LinkedIn Business Description Manufacturer of high precision measuring devices and gages. World leader in thread gages, chamfer gages, ring gages, plug gages and more. Reviews & Ratings Write a Review No Review. Please login / register to add your review. Tags : manufacturing precision gages