The master microscope is equipped with multiple eyepieces and objectives, with large view field and sharp imaging;
The photoelectric and digital technology is adopted, taking the precision grating scale as sensory element, with high accuracy of measurement;
The master microscope can out-beat left and right, suitable for the measurement of helical parts;
The transmission and indirect lighting can measure profile and the surface sizes;
High-speed movement and vernier arrangement are installed and can be switched over speedily;
Multiple accessories of tailstock, V-type support, height-measuring device, etc. are equipped, with wide-range uses.

JX11B Digital Multipurpose Instrument Microscope is a multipurpose measuring instrument widely used in machinery industry, electron-manufacturing industry and metering and measuring institutes. It can be used to measure sizes, shapes, angles and locations within the range of various parts. The computer technology is adopted for data processing in measurement; and multiple measuring methods are used including the image method, the shaft contact method, the double-beam interference fringe method, etc. to greatly upgrade the measuring performance of the instrument. The combination and developability of the software can intensify the system function and satisfy the customers’ requirements within still greater ranges.
Typical measured targets are
Measuring various forms of shaped parts, e.g., sample plates, form turning tool, form cutter, punching die, cam, etc.
Measuring the intermediate-, coarse- and minor-diameter, pitch, tooth-form semi-angle of the external screw-thread for screw-threads, leading screws, worms, etc.
Measuring the lead, saw-shaped angle and tooth profile angle of the gear hobber.
Measuring the figure and location errors of the position degree on the circuit board, on drill jig, or on aperture plate and those of the symmetry on the keyslot, etc.

Worktable
Stroke of measurement (mm)     X-coordinate:  200            Y-coordinate:  100
Resolution ratio of X- and Y-coordinate measurement:  0.0002mm
Accuracy of the X- and Y-coordinate:  (1+L/100)μm, of which, L = length of the measured workpiece, unit: mm
Area of square worktable (mm):  260×270
Maximum height of the stored workpiece on the square worktable (mm):  140
Microscope upright column
Angle tilting range:  ±12℃          Angle tilting division value:  30′
Tailstock:
Maximum diameter gripped by the tailstock:  φ100 mm
Maximum length gripped by the tailstock:  700 mm
Higher Tailstock
Maximum diameter gripped by the higher tailstock:  φ250 mm
Maximum length gripped by the higher tailstock:  200 mm
Digital display index head
Angle measuring range:  0º~360º
Resolution ratio of the angle measuring:  5″
Accuracy of the angle measuring:  30″
Objective  

Double-image objective:

Optical position indicator
Minimum detection aperture:  φ5 mm
Maximum detection depth:  15mm           
Metering force:  0.1N 
Locating stability:  0.001mm
Limit error gauged for head diameter:  0.0005mm
Maximum load of the instrument:  40kg
Overall size of the principal machine of the instrument: 
(L×B×H) = 1300×1250×800
Weight of the principal machine of the instrument:  450kg
Ambient environment of the instrument service:
Room temperature:  20℃±1℃ 
Relative humidity:  Not more than 60%
（All the technical data and information contained herein are subject to change without prior notice.）