(650) 365-4373

Precision Metal Parts in Production Volume


Petersen Precision uses a multitude of technologies to deliver precision solutions to its customers.  Below are basic descriptions of these processing technologies with equipment lists and technical brochures.  If you have a question about our equipment or capability, please give us a call at (650) 365-4373.

Petersen Precision is able to use many of its manufacturing technologies to provide individual process services. These services include double disc grinding, Blanchard grinding, centerless and ID/OD grinding, surface grinding, and lapping.


Specialty Processes

Petersen Precision offers many specialty technologies for finishing (laser marking, ultrasonic cleaning, sandblasting) as well as specialty processes that may be difficult to locate (wire EDM, broaching, press fitting assemblies via hydraulic press).

In addition to the technologies listed, Petersen also can offer light duty manual assembly work to deliver a closer to finished article to the customer.  Please contact us with any questions regarding any special technology, whether listed here or not.

Specialty Tools:

  • 2 Mitsubishi FA10P Wire EDMs, 13.7″x9.8″x8.6″, 15˚ max. taper angle
  • 1 Crest Aqueous Cleaning System with Automatic Gantry
  • 2 Vapor Hone Sandblasting Units
  • 1 Greenerd HPB-15 15 Ton Hydraulic Press
  • 1 Epilog Fibermark 20 Watt Laser Engraver/Marker


Petersen Precision has multiple deburring technologies depending on the solution required for each part and process.

Deburring Tools:

  • 1 Niederberger 4 Head Sanding/Brushing Machine
  • 1 Sweco Vibratory Deburring Machine, 14 Cu. Ft.
  • 1 Sweco Vibratory Deburring Machine, 3 Cu. Ft.
  • 1 Sweco Vibratory Deburring Machine, 4 Cu. Ft.
  • 2 Roto Finish Deburring Machine, 13 Cu. Ft.
  • 1 Roto Finish Deburring Machine, 10 Cu. Ft.
  • 2 Techniks USA Spinner Deburr and Polishing Machines
  • 2 Microblasters MD-1000
  • 3 Vibra Hone Centrifugal Model CB-10


At Petersen Precision we strongly believe that in order to deliver a precision solution, you also have to be able to prove your precision through inspection with enough accuracy to detect even the slightest changes in your process.

Over the years we have built an impressive collection of inspection tools that generally have capabilities far beyond our manufacturing technologies.

In addition to providing inspection data as required by our customers we are also able to offer contract inspection services. Please contact us for more details.

Inspection Equipment:

  • 8 Gage Block Sets
  • 10 Fowler Z-Cal Height Gages
  • 1 American Optical Dual Optics Stereo Microscope 10 – 40X with 15X Eyepieces
  • 10 Precision Squares
  • 1 Wilson Model 5JR Rockwell Hardness Tester
  • 1 Wilson Instron Hardness Tester Model C525T
  • 1 Starrett Croblox Master Set
  • 1 Olympus PME Metallurgical Microscope
  • 1 Leco M-400 Knoop Microhardness Tester
  • 1 Murphy & Miller Cold Stabilization Unit – 100F
  • 1 Buehler Encapsulating Polishing System for Cross-Section Analytics
  • 1 Federal Model 136B-5 Master Ring and Disc Comparator
  • 3 UPI Dermitron Model D-8 Coating Thickness Testers

Inspection Equipment:

  • 1 Zeiss Accura CMM Coordinate Measuring Machine
  • 2 Zeiss Contura CMM Coordinate Measuring Machine
  • 1 Zeiss OI-322 Optical CMM with Probe Capability
  • 1 OGP 30″ Optical Comparators with PC Computer Control
  • 1 CPC CC-14 Comparator with Digital Overlay
  • 4 Scienscope CMC LCD10 Video Microscope with Large Field of View
  • 1 Powerscope M400 Video Microscope with Parfocal Telecentric Zoom up to 400X
  • 1 3D All-in-One WZ10 3D Video Microscope with integrated 10.4” LCD screen
  • 4 Toolmaker’s Microscopes with up to 200X zoom capability
  • 1 Z-Mike Laser Micrometer
  • 1 Federal Formscan 3000 Computerized Roundness Geometry Gaging System
  • 8 Federal Electronic PC Gaging Systems
  • 7 Federal Air Gages
  • 1 Pneumatic Granite Flatness Gage
  • 3 Bench Centers
  • 5 Sunnen Bore Gages
  • 16 Bausch & Lomb Stereo Zoom Microscope
  • 1 Nikon 6C 12″ Optical Comparator
  • 1 Koslow TE 3000 Alloy Sorter
  • 1 Sciencscope XTL-V Plus Color Video Inspection System
  • 1 Gould Surface Finish Indicator
  • 1 Federal Model 4000 Surfanalyzer Surface Finish Measurement System
  • 4 Ono Seiki EG 307 Digital Linear Gages
  • QC Calc Realtime Data Collection Software with CMM Integration

Tool Room

Petersen Precision has its own tool room on site for the fabrication and maintenance of its fineblank dies, as well as the fabrication and maintenance of its in process fixturing for all other technologies.

The Tool Room’s equipment is kept separate from the production equipment despite sharing much of the same type of machinery.

Having this resource on site provides Petersen with a competitive advantage by controlling out tooling resource as well as providing opportunities for innovation due to the feedback between the operators and fixture designers and manufacturers.


  • 1 Gibbs CAM Workstation
  • 1 Mitsubishi FA10P Wire EDM 13.7″x9.8″x8.6″
  • 1 Mitsubishi FA10S Wire EDM 13.7″x9.8″x8.6″
  • 1 Agie Elox Mondo 20 EDM Sinker
  • 2 Okamoto 612 Surface Grinder
  • 1 Mitsui 618 Surface Grinder
  • 1 Trak DPM 17″x32″
  • 2 Trak DPM 5 20″x40″
  • 1 MoriSeiki Lathe 18″ Swing 45″ Bed
  • 1 Hardinge Lathe
  • 1 DoAll Band Saw
  • 1 Deckel Tool Grinder
  • 1 ALZ Metal Drill Press
  • 1 Chevalier Surface Grinder 8″x20″
  • 1 Okamoto 12-24SA Precision Surface Grinder