FIELD: instrument engineering. SUBSTANCE: removable semi-transparent reflectors are brought into the device which are mounted between the lens and members of magnification measurement unit. Reflectors are mounted one behind the other and they cross with axis of unit for changing in magnification at an angle of 45 deg. In order to observe objects with different properties the reflectors form sets with corresponding relations of reflections. The relations are given in the description of the invention. EFFECT: improved control of microstructures with low-relief members. 4 cl, 1 dwg
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