100% Original made in USSR!                            Main features and description

Purpose: It is used for high-precision geometric measurements, such as checking the flatness and straightness of surfaces, as well as for transferring units of length to other measuring instruments, for example, bar levels with a division price of 0.02 mm/m. Operating principle: Based on the use of an accurate cylindrical level and an hour-type indicator. The device is installed on two points of the measured surface, and by bringing the bubble level to zero, the countdown on the indicator is recorded. Repeated measurement after turning the device 180° allows you to calculate the excess between the points. Base (distance between supports): The base of the device can be adjusted or have a fixed value (for example, 500 mm complete with carriage). Accuracy: Allows you to achieve micron-high measurement accuracy, on the order of 5-10 microns. Manufacturer: The main manufacturers of MN-2 micronovels in Soviet times were Kazpriborremont software and the Etalon plant (Alma Ata, Kazakhstan). Metrological support: The type of measuring instrument MN-2 was registered in the State Register of Measuring Instruments under the number 5494-76. The device was supplied with a technical description, operating instructions and a passport (AM.5.817.000 PS). Micronivelir MN-2 is used in metrological services and in production, where control of high-precision surfaces is required, and is a reference tool for verifying other less accurate measuring instruments.

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