When purchasing a used microscope, E bay & Lab X are a good source, used microscope dealers are also if the has a competent service department. Get a guarantee at least 30 days & specify that the focus be smooth

and not chunky.  I like Leitz or Leica myself best.  They have parts & assembly drawings to help the do-it yourself handy type.

A little dust is not a problem, easly cleaned by a tech.  Most shops do not have allignment equipment, try and specify one that does. The optical items need to be in line and in good condition. some are hard to find.

Power supplies seem to be lost or whatever but missing. all is not lost try and find some person that repairs or makes them.  A very big thing is to find the right microscope for the job. The proper type for your use. Metalurgical for metal and opake type work. (reflected light and all its options) Transmitted light for biological work. These are for high power work.   Stereo or Macro Microscopes for low power examination.

We have a complete shop for all your microscopy needs.    We make stages, stands, etc. align with autocolamators , both infinity & finite with proper mirrors. make missing repair parts, modifications.

add cameras, controllers, linear measuring scales / computer measurements.  We can regrind the ways of you Metrology instruments, repair ans calibration.       ADVANCED INSTRUMENTS

                                                                           16035 Caputo Dr. # B

                                                                            MORGAN HILL, CA 95037

                                              PHONE 408-779-4240   FAX 408-779-8492    TERRY@AIM-CO.NET