The Quality of American Manufacturing Since 1962

Whether you are and extrusion tooling customer or a defense customer, our Rhode Island manufacturing facility operates under the quality standards required by government contracts. Everything is manufactured in the USA using lean principles, and the highest quality in an ISO 9001:2015 facility.

Quality Statement

Guill Tool & Engineering Co., Inc. is committed to meeting the needs of our customers and to continuously improve our processes. Requirements of ISO 9001 and AS9100 are communicated and maintained at all levels of the company through training, internal audits and internal communication. Each person in the company is dedicated to delivering quality products and service to our customers.


  • Small Business
  • AS9100:2016 Registered
  • ISO 9001:2015 Registered
  • ITAR Registered
  • NIST SP800-171 Compliant
  • JCP Certified
  • EB-2678
  • MIL-I-452028A
  • MIL-STD-45662A

Inspection Equipment

Hexagon One CMM
Axis Capacity
x= 25”, y= 36”, z=20”

Nikon MM-40 Measuring Microscope

Brown & Sharp Hite-Tronic
Height Gauge - 36" Height Capacity


Brown & Sharp Validator
18" x 32" x 32" Axis Capacity

Taylor Hobson Profilometer Surtronic 3
Surface Finish Gauge


Rockwell Hardness Tester

Granite Surface Plates

Optical Comparitors

Electronic Height Gages

American Manufactured in Rhode Island

Since 1962, we have been manufacturing quality machined parts and tooling in Rhode Island. We believe in American manufacturing and are proud to be a thriving part of the manufacturing industry by adhering to the highest quality standards and supporting our local economy.

Extrusion Expertise Is Here For You