High power inspection microscope
FS-300 MITUTOYO

FEATURES
* The complete FS-300 system can be
composed of a variety of components for
meeting diverse applications.
* Available with or without a transmittedlight
illuminator.
* Ultra-long working distance objectives
provide easy manipulation of workpieces.
* Easy switching between bright-field
illumination and dark-field illumination.
* Optional accessories widen the range of
applications.

SPECIFICATIONS
Main unit Observation system Bright field (BF): 378-320, 378-322, 378-324, 378-326
Bright/dark field (BF/DF): 378-321, 378-323, 378-325, 378-327
Reflected illumination Koehler illumination with aperture diaphragm (centering mechanism) and field stop
Transmitted illumination 12V/100W fiber illumination (non-stepped brightness adjustment) with aperture
diaphragm (378-323, 378-324, 378-326, 378-327 only)
Focus adjustment With concentric coarse and fine focusing wheels (right and left)
Fine adjustment: 0.1mm/rev. for 32mm travel range
Coarse adjustment: 3.8mm/rev. for 32mm travel range
Power turret Inward type with 4 lens mounts
Workstage Travel stroke: 356 x 306mm with X-/Y-axis fine feed knobs and coarse travel handle
Optical tube Type Trinocular tube (erect image)
Field number 24
Depression angle Fixed 20º: 378-320, 378-321, 378-322, 378-323
Adjustable 0º to 20º: 378-324, 378-325, 378-326, 378-327
Intermediate image mag. 1X
Optical pass ratio Siedentopf type, adjustment range: 51 - 76mm
Pupil distance Siedentopf type, adjustment range: 51 - 76mm
Eyepiece Field of view 10X/ø30: 378-320, 378-321, 378-322, 378-323
10X/ø24: 378-324, 378-325, 378-326, 378-327