CHECK-MASTER II-32 Type WH850               



 The CHECK-MASTER II is an advanced measuring instrument for automatic measurement of almost all types of cells. Its main application is in situations where the highest accuracy and the ease of use are of great importance. Many additional accessories allow it to be used for final checking and goods inwards checking of rotogravure cylinders.

All measurements are taken automatically. False measurements due to incorrect operation are hereby excluded.

The basis of this new measuring system is the world-wide known Check-Master microscope, which has been substantially modified and equipped with a CCD camera having a high performance image processor running under Windows and a high-resolution monitor.

The user surface can be individually modified to ensure optimum ease of use for every application. Due to help facilities operating of the CHECKMASTER II has still become more easy and comfortable in addition to the already existing possibilities offered by Dot Check and Check Master. The illumination of the microscope is adjusted fully automatically and operation is as usual, extremely simple. The PC mouse and keyboard are used to operate the instrument.

The use of a PC with the fast processor allows many other features to be provided such as storage of images and readings, connection of a laser jet or thermo printer, links to other programs and networking with other PC’s.

Click here for the introduction video of the Checkmaster II 
Click here for a presentation of the Checkmaster II


o   Correct and quick automatic measurement of the longitudinal and transverse diagonals and tunnelling (channel) in one operation.

o   Precise automatic determination of the screen including longitudinal and lateral repeat (feed) and angle output.

o   In addition, the cells can be measured manually by using the mouse.

o   Exact output of the surface of a cell in µm2.

o   Accurate motor controlled optical depth measurement with IFC and trend bar.

o   Determination of the volume for electromechanical engraving in ml/m2.

o   Adjustment of the measuring position by 15 mm in longitudinal and transverse directions.

o   Several optical magnification/measuring ranges so that both coarse and fine screen sizes can be accurately measured.

o   Selection of individual or multiple measurements.

o   Possibility of digital switching to 2 x and 4 x image magnification, all measurement functions remaining active.

o   Considerable simplification of the series measurement of up to 24 ribbons each with up to 10 tones in one operation.

o   Automatic change of measuring range with on-screen display of selected objective.

o   Measurement can be made in live mode or from stored images.

o   Measurement results and images can be stored on the hard disk or floppy-disk.

o   Interfaces for data communication and various types of printers.

o   Program for calculation of anilox rollers after entry of the known data.

o   Entry of cylinder characteristic data.




CHECK-MASTER II is a combination of an image processing system and a high precision video microscope. Operation is made by mouse or keyboard. The Check-Master program is Windows compatible.

The design of the microscope ensures parfocality (i.e. the image remains sharp while the objective is being changed) and motor controlled coarse and fine adjustments of focusing simplifies operation considerably.

The 1/2" high-resolution digital video camera magnifies the image from the objective and illumination unit to 20 times its original size. The video signal is fed to the computer via a flexible cable and is then converted into a 32-bit digital signal by a special interface. Illumination is made by an LED lamp with long service life. Over-exposure of the image is not possible because the lighting level is automatically adapted to the reflection. This ensures that the signal to the converter is always at its maximum level.

The digital signal is analysed pixel by pixel using an image processing system and is processed several times according to contrast and brightness. Dark areas are identified and the geometry and position in the image are checked. Adjustable filters largely eliminate scratches and dust. The sum of all the pixels that are covered by a cell represents the surface. The length and width of the cell are determined and put out as longitudinal and transverse diagonals. The measured cells are automatically highlighted in red on the monitor for visual checking.

The screen size is determined by the position of the cell in relation to the neighbouring cell. The depth is determined by focusing on the surface (zero point) and then focusing on the bottom of the cell. IFC and a trend bar support the depth measurement.

When carrying out an automatic "cylinder measurement" (from one tone to several tones in several ribbons), all the measured values and images are stored. These can be kept for future checking and repeat measurement of surfaces and diagonals.

Technical data (subject to technical modifications):


a) High-performance image processing computer.

o   CD/DVD-burner

o   500 GB hard disk with storage capacity for up to 3000 images in TIFF format

o   Windows 10 operating system

o   Connections to printers and networking

o   High-resolution digital CCD camera (sensor 1/11/8",  black and white)

o   TFT flat panel colour monitor

o   Precision microscope with low centre of gravity and anti-slip foot. With carrying handle, objective revolver and 4 objectives.

o   Simplified focusing due to par-focal design; the image field is at one level for all objectives.

o   Plan-achromatic objectives for maximum contrast and excellent separation.

o   Illumination by computer-controlled light source (long life LED).

o   Motor controlled focusing operation.

o   Nose piece for 5 objectives

o   Automatic change of measuring range

o   Mechanical longitudinal and transverse adjustment up to 15 mm

o   Cylinder circumference from 100 mm up to 2500 mm and plane

o   Cable length to computer up to 5 metres

o   Using the 3-button mouse or AT keyboard supplied.



Multiple automatic and manual measurements of engraved cells.

Longitudinal and transverse diagonal and canal (channel/tunnel)

Screen size and repeat (longitudinal and transverse feed), screen angle.

Depth using IFC and trend bar.


o   Determination of volume in ml/m2.

o   Automatic storage of up to 3000 images in 24 ribbons in either TIFF, JPG or BPM

o   Settings for series measurement with or without ribbon division.

o   Automatic printing of data or image and data.

o   Automatic export into PDF file.

o   Program for calculation of anilox rollers.

o   Image magnification and displacement.

o   Listing of the measurement results for all ribbons.

o   Automatic change of measuring range with the selected objective displayed on screen.

o   Possibility of inversion of measurements to ensure trouble free measurement of coated surfaces.


o   Touch-screen monitor

o   Software for measurement of etched or laser-created cells.

o   software for data export into MS-Excel

o   Calibration plate

o   Colour camera