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PM service from the experts at WESCO:

WESCO’s factory trained service staff has the expertise and the experience to maintain and service your inspection tools. We are not only factory-authorized service for WESCO, but have qualified experience servicing Olympus, Nikon, Leica, Zeiss and others.

Description of WESCO’s PM service:

Mechanical service:

  • Check and replace lubrication in all mechanical components as needed
  • Lubricate and/or clean stage bearings and drives
  • Check stage for proper travel
  • Inspect focus block for travel, feel, and function
  • Lubricate and adjust all slides and actuators in optical system

Optical services:

  • Check and clean optics in head, illuminator, objectives, eyepieces, reticles, and cameras (*improper chemicals and cleaning technique can damage lenses coating*).
  • Check objectives for parfocality and concentricity
  • Check objectives for chips on bottom lenses and report condition
  • Check and center illuminator and condenser apertures and field diaphragms
  • Check alignment of head assembly
  • Check and adjust parfocality of eyepieces to camera (if needed)
  • Clean camera (CCD, Digital, or 35mm)
  • Center illumination with optics

Clean outer surfaces of instrument (dirt, grease, old stickers…)

Report and Tag scope:

  • You will receive a field report at the completion of the service session.
  • Within 5 working days you will receive a typed inventory, repair, and service report
  • WESCO keeps a service data base of all instrument work
  • WESCO will place new PM stickers at the completion of the service session.


A calibration is usually preformed after Calibration verification has been preformed and the instrument has been found to be out of spec. Your tool can be out of calibration for a number of reasons:

  • Liner encoder values need to be reset in the DRO.
  • Micrometer mounting can be skewed
  • Bearings can be loose or worn
  • Stage can be warped or worn

We commonly repair the above problems. After the calibration has been performed, another calibration verification is done and a calibration sticker is affixed to the scope. A calibration report and certificate are generated and sent to the customer.


If you have an instrument that is out of warranty or a vintage scope, we can repair it. Many manufactures don’t support “out of production models” and often don’t stock parts any more. WESCO has an extensive inventory of new and used parts and equipment. We also have a vast network of parts dealers we can count on. In some cases we have fabricated replacement parts in our on site machine shop.

WESCO has experience working on many different models and brands. WESCO works on everything from simple stereo microscopes to research models with a variety of video and digital equipment. We also are collectors of vintage microscopes and have experience in restoration and repair.

WESCO’s technicians can work on your instruments on site or you can ship units to us (we can provide information on proper shipping techniques). Loan microscopes are also available.