Your roadmap · आपका रोडमैप
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Admission & first meetingप्रवेश और पहली मुलाकातEnquire at your nearest NDSS centre, meet the teacher, fix the batch time and get your study material.
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Part 1 of the syllabusपाठ्यक्रम भाग 1Unit-wise coaching with notes and doubt classes.
Introduction to MetrologyLinear and Angular MeasurementLimits, Fits and Gauges
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
ComparatorsSurface Finish and Thread MeasurementMeasurement of Mechanical Quantities
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 4 exam (university / board)विश्वविद्यालय / बोर्ड परीक्षाPrevious papers and full revision before the exam.
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Online tests & resultऑनलाइन टेस्ट और रिज़ल्टTake the tests online; your marks and result show in your student login and at the centre.
Syllabus · पाठ्यक्रम
1 subject · 6 chapters · 29 topics
01Introduction to Metrology
4 topics+
- Need of measurement and standards (line, end, wavelength)
- Accuracy, precision, sensitivity and resolution
- Types of errors and their causes
- Calibration and care of instruments
02Linear and Angular Measurement
5 topics+
- Vernier caliper, vernier height and depth gauges
- Outside and inside micrometers
- Slip gauges and wringing
- Bevel protractor
- Sine bar and angle gauges
03Limits, Fits and Gauges
5 topics+
- Tolerance, allowance, deviations
- Clearance, transition and interference fits
- Hole basis and shaft basis systems
- IS 919 / ISO system of limits and fits
- Plug, ring and snap gauges, Taylor's principle
04Comparators
4 topics+
- Characteristics of a good comparator
- Mechanical comparators (dial indicator, Sigma)
- Optical and electrical comparators
- Pneumatic comparator (Solex)
05Surface Finish and Thread Measurement
5 topics+
- Surface texture terms: roughness, waviness, lay
- Ra, Rz values and surface roughness testers
- Screw thread elements and their measurement
- Two-wire and three-wire methods, best wire size
- Gear tooth vernier
06Measurement of Mechanical Quantities
6 topics+
- Transducers and their classification
- Force and torque measurement (load cells, dynamometers)
- Pressure measurement
- Temperature measurement (thermocouple, RTD, pyrometer)
- Strain gauges
- Flow and speed measurement
About this course
You will be able to
- Explain standards of measurement, accuracy, precision and types of errors
- Use vernier instruments, micrometers, slip gauges, sine bar and bevel protractor correctly
- Apply limits, fits and tolerances and design simple limit gauges
- Explain mechanical, optical, electrical and pneumatic comparators
- Measure surface finish and screw thread elements
- Explain instruments for measuring force, torque, pressure, temperature, strain and flow
Who it is for
- Diploma Mechanical Engineering students of Semester 4 (BTEUP)
- Diploma Production and Automobile students
- Quality control trainees who want to revise measurement basics
What you need
- Workshop practice and basic engineering drawing of earlier semesters
Online tests & result
Practice and unit tests online; marks and result show in your student login and at the centre.
Student login →
Questions
Will I practise on real instruments?
Yes. Instrument reading practice with vernier, micrometer, slip gauges and sine bar is done along with the theory.
Are numericals on fits and sine bar included?
Yes. Limits and fits, least count, sine bar and best wire size problems are solved.
Is this course based on the BTEUP syllabus?
Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.
