4XB series small metallographic microscope structure is small, easy to use, easy to carry and field observation use. It can be widely used in factories and school laboratories to identify and analyze the structure of various metals and alloys.
| main technical parameters | |
| plane cocular： | 5X/20mm、10X/18mm、12.5X/14mm、Flat field split eyepiece10X/18mmprecision0.1mm |
| flat-field objective： | 10X/0.25、40X/0.65（spring）、100X/1.25（spring-loaded oil seal ） |
| Three layer mechanical stage | |
| external dimension： | 180mmX155mm |
| shift motion： | 30mmX30mm |
| Inside hole of the film group： | Ø10mm、Ø15mm、Ø20mm、各一 |
| revolving nosepiece： | Sound 4-hole ball inner positioning bearing type, 5-hole end face equal height, error less than 0.005mm, coaxiality error less than 0.03mm |
| collecting lens： | Bright condenser NA1.25, with adjustable aperture light bar, blue, green, yellow, gray filter |
| focusing mechanism
： |
Coarse fine-tuning coaxial operating system, coarse adjustment stroke 30mm, fine-tuning 0.2mm per revolution, fine-tuning accuracy 0.002mm, with focusing limit device and focusing tension mechanism of the stage does not slide |
| Light source group： | Cora lighting system, input 220V, output halogen tungsten lamp 6V15W |
