The paper describes the principle of measuring linear dimensions using a nano-measuring machine (NMM), which implements the method of measuring three coordinate axes in the range of 25X25X5 mm3. Sources of non-excluded systematic measurement errors are identified, which are conventionally divided into factors associated with the method of measuring length using an interferometer and factors determined by the design and technological features of the nano-measuring machine. Statistical estimates of the measurement result have been determined and the error in transferring the size – meter length in the nanometer range of measurements has been calculated. The results obtained assert that the nano-measuring machine is a unique tool that allows one to carry out measurements of millimeter dimensions with nanometer accuracy. The results obtained can be used for metrological assessment of the step height and step width, when calibrating measuring instruments in the nanometer range, roughness measures in a large range when calibrating profilometers and contourographs, as well as templates and micrometer objects for measuring high-precision microscopes.

The paper proposes a set of technical tools for solving the problem of ensuring the uniformity of measurements of micro- and nanoparticles. To do this, it is necessary to ensure the traceabilityof particle size measurements to a unit of length – a meter, as well as equivalent diameters used in measurements in various dispersed media (aerosols and suspensions). To ensure traceability of particle diameter measurements to the meter, it is proposed to use a nanomeasuring machine with an atomic force microscope as a probing system. The paper presents a diagram of the measuring system, describes the principle of operation of the machine and the method for measuring particle sizes. The main alleged sources of errors in particle measurement by this method are also identified. To ensure the traceability of measurements of the hydrodynamic diameter of nanoparticles, which characterizes particles in a liquid (suspension), it is proposed to use a nanoparticle size analyzer that implements the method of dynamic light scattering. The scheme of the analyzer with a description of the principle of measuring the size of nanoparticles by the method of dynamic light scattering is presented in the paper. The scheme of the column of the analyzer of the differential electrical mobility of particles is presented to ensure the traceability of measurements of their diameter, which is equivalent in electrical mobility. Diameter is usually used to characterize particles in the aerosol state. A diagram of an analyzer for the differential electric mobility of particles is given with a description of the operating principle, a formula for calculating the particle diameter is derived.

The quality of nanomaterials and nanotechnologies is largely determined by the stability of the app-lied technologies, which, to a large extent, depend on the constancy of particle sizes. In this regard, metrological problems arise that are associated both with measuring the dimensions of the microstructure of aerosols, suspensions and powders, and with ensuring the uniformity of measurements when transferring a unit of a physical quantity from a standard to working measuring instruments. The purpose of this work was to determine and calculate the error in transferring the size of a unit of length when measuring the diameter of nanoparticles. An analyzer of differential electric mobility of particles was determined as a reference measuring instrument for which the calculation was made. It allows the separation of aerosol particles based on the dependence of their electrical mobility on the particle size. In combination with a condensation particle counter, it allows you to scan an aerosol and build a particle size distribution function. This measurement method is the most accurate in the field of measuring the diameters of particles in aerosols, therefore, the error in the transmission of particle size must be set as for a standard. The paper describes the physical principles of measurement by this method and presents an equation for determining the diameter of nanoparticles. Based on this equation, the sources of non-excluded systematic error were identified. Also, an experimental method was used to determine the random component of the measurement error of nanoparticles and to calculate the error in transferring the size of a unit of length when measuring the diameter of nanoparticles. The obtained results will be used for metrological support of standard samples of particle size, ensuring traceability of measurements of aerosol particle counters and for aerosol research.

Rising of accuracy of automated weighting systems' functioning can be achieved by identifying and exclusion of systematic errors. Methods of reducing of temperature error's impact and design procedure of thermocompensation elements of strain-gauge bridges are considered.

Rising of accuracy of automated weighting systems' functioning can be achieved by identifying and exclusion of systematic errors. Methods of reducing of temperature error's impact and design procedure of thermocompensation elements of strain-gauge bridges are considered.

The paper proves the necessity to create modern means of technical diagnostics which are based on up-to-date methods and control means ensuring monitoring of construction objects at all stages of their life cycle and true resource forecasting of their safe usage.It has been proposed to consider a system of construction monitoring as a particular case of SCADA-systems which are developed for accumulation and analysis of process data.

The paper proves the necessity to create modern means of technical diagnostics which are based on up-to-date methods and control means ensuring monitoring of construction objects at all stages of their life cycle and true resource forecasting of their safe usage. It has been proposed to consider a system of construction monitoring as a particular case of SCADA-systems which are developed for accumulation and analysis of process data.

The paper considers tendencies for development of civil engineering monitoring. The main factors influencing on secure operation of the objects are specified in the paper. The general principles used for the development of civil engineering systems are investigated in the present paper. Their typical and structural scheme is proposed and classification of the applied technical means are cited in the given paper.

There is a substantiation of necessity to elaborate working verifying schemes ensuring unconditional verifying process of measuring tools in the prescribed number and in strictly stipulated terms. The paper contains an algorithm for elaboration of working verifying schemes developed on the basis of Multi-criterion principle that provides for an account of metrological, structural, organizational and technical and economic criteria at stage of calculation.