Certified Quality Assurance


We are proud to be an AS9100D registered and ISO 9001:2015 certified manufacturer.  AS9100 includes all of the standards of ISO 9001 with dozens of added critical quality requirements tailored to the aerospace, aviation and defense industries.

Quality is job number one at Prieto Machine.  Thanks to the precision provided by our CNC machines and quality craftsmen, we are able to deliver on that mission. Following is a list of the extensive inspection equipment that we use to verify CNC precision and deliver quality machined products.


Inspection Equipment

Deltronic optical comparator with surface illumination full x, z digital measurement

Phoenix 216-142 DCC Coordinate Measuring Machine

1-2’x3’ DoAll Surface Plate

1-3’x4’ Starrett Granite Surface Plate

1-81 piece Gage Block Set

1-25 piece Gage Block Set

1” to 6” Micrometers

14” Vernier Calipers

6” Dial Calipers

6” Digital Calipers

8” Digital Calipers

1” to 6” Internal Micrometers

Thread Plug Gages

Thread Ring Gages

.011 to 1.000 Plug Gages

All Standard Indicators

Surface Gages

Indicator Stands, OD & ID Calipers

Mitutoyo Profilometer

Mitutoyo 0-12” Digital Height Gage

American Optical Stereo Microscope 80X

Our Machined Products

Our Contract Manufacturing Products


We will produce what you need, when you need it. We have assembled a complete, practical and concise group of CNC milling, CNC turning, and CNC Swiss machinery in our CNC Machine Shop to execute your contract manufacturing job on time, according to specs, with cost savings in mind.


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