Discipline Mechanical Calibration Issue Date Certificate Number C-0386 Valid Until Last Amended on - Page 1 of 6

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1 Last Amended on - Page 1 of 6 I. DIMENSION 1. CALIPER $ (Vernier / Dial / Digital) L. C. 10µm Φ Up to 600 mm >600 mm to 1000 mm 14.0 µm 19.0 µm Using Gauge Block Set, Caliper Checker, Length Bar & External Micrometer IS DEPTH GAUGE $ (Vernier / Dial / Digital) L. C. 10 µm Φ Up to 300 mm 12.0 µm 3. HEIGHT GAUGE $ (Vernier / Dial / Digital) L. C. 10 µm Φ Up to 600 mm 15.0 µm 4. EXTERNAL L. C. 1 µm Φ Up to 100 mm 3.0 µm Using Gauge Block Set & Caliper Checker IS 4213 Using Gauge Block Set,Caliper Checker& Surface Table IS 2921 Using Gauge Block Set IS INSIDE L. C. 10 µm 5 mm to 30 mm 6.0 µm Using Gauge Block Set & Accesssories

2 Last Amended on - Page 2 of 6 6. INTERNAL 2-Point Basic Travel of Micrometer L.C.10 µm 50 mm to 63 mm 11.7 µm Overall Length Accuracy with Extension Rod L. C. 10 µm Up to 400 mm 6.1 µm Using Gauge Block Set & Electronic Probe & Comparator Stand IS DEPTH L. C. 1 µm Φ Upto 300 mm 7.0 µm 8. DIAL CALIPER GAUGE $ (Internal /External) L. C. 10 µm Upto 100 mm 8.1 µm Using Gauge Block Set & Surface Plate Using Gauge Block Set & Accessories 9. MICROMETER HEAD $ L. C. 1 µm Φ Upto 50 mm 1.9 µm Using Electronic probe & Comparator Stand IS DIAL GAUGE $ (Plunger Type) L. C. 1µm Φ Upto 1 mm 2.9 µm Using Dial Calibration Tester IS DIAL GAUGE $ (Lever Type) L. C. 1µm Φ Upto 1 mm 2.9 µm Using Dial Calibration Tester IS 11498

3 Last Amended on - Page 3 of BORE GAUGE WITH DIAL GAUGE $ (for transmission accuracy) Upto 2.5 mm 6.4 µm Using Dial Calibration Tester 13. DIAL THICKNESS GAUGE $ L. C. 1 µm Φ Upto 25 mm 3.0 µm Using Gauge Block Set Upto 200 mm 1.8 µm Using Gauge Block Set & 14. PLAIN PLUG GAUGE $ Electronic Probe IS PLAIN RING GAUGE $ 5 mm to 100 mm 3.6 µm Using LMM & Master Ring IS 3485 Upto 20 mm 1.9 µm Using Gauge Block Set & 16. CYLINDRICAL MEASURING PINS $ Electronic Probe IS SNAP GAUGE $ 2 mm to 20 mm 2.2 µm Using Gauge Block Set IS PLAIN THREAD PLUG GAUGE $ (Effective Diameter) 19. PLAIN THREAD RING GAUGE $ (Effective Diameter) M2 to M µm Using External Micrometer & Thread Measuring Wire IS 2334, IS 4218, IS M6 to M µm Using LMM & Master Ring IS 2334, IS 4218, IS 14962

4 Last Amended on - Page 4 of DIAL CALIBRATION TESTER $ L. C. 1.0 µm Upto 25 mm 1.7 µm Using Electronic probe 21. FEELER GAUGE $ Upto 2 mm 1.9 µm Using Electronic Probe IS BEVEL PROTRACTOR $ L. C. 1 Φ min. of arc Using Angel Gauge Set IS V-BLOCK $ Linear Angle 150 mm x 90 mm x 85 mm 7.7 µm 5.0 min. of arc Using Profile Projector IS ENGINEERS SQUARE $ Parallelism Squareness 25. ANGLE PLATE $ Squareness Parallelism Upto 150 mm 6.4 µm Using Granite L Square & Plunger Dial Gauge IS 2103 Upto 150 mm 6.4 µm Using Granite L Square & Gauge Block IS RADIUS GAUGE $ 2 mm to 25 mm 12.0 µm Using Profile Projector IS mm 1.8 µm Using Gauge Block Set & 27. MICROMETER SETTING PIECE $ Electronic Probe

5 Last Amended on - Page 5 of FORD CUP $ (Orifice Diameter) Upto 5 mm 12.0 µm Using Profile Projector IS STANDARD FOILS $ 0.01 mm to 1.0 mm 1.6 µm Using Electronic Probe 30. SURFACE PLATE Flatness # 2000 mm x 2000 mm 2.7 L W 100 L &W in mm Using Spirit level (LC: 10 µm/m) IS PROFILE PROJECTOR Linear LC mm Angular L. C. 12 min Upto 300 mm 0 to µm 7.0 sec of arc Using Gauge Block Set Operating Temp As per JIS B HEIGHT GAUGE L. C. 0.1 µm Φ Upto 600 mm 5.0 µm II. PRESSURE AND VACUUM 1. PRESSURE - PNENMATIC DIGITAL & DIAL PRESSURE INDICATORS # Using Gauge Block Set, Caliper Checker & Surface Plate IS bar to 40 bar 0.53 % rdg. Using Twin Mode Digital pressure calibrator EPC 40 R&D & Pneumatic Pump 2. PRESSURE - HYDRAULIC DIGITAL & DIAL PRESSURE INDICATORS $ 1 bar to 350 bar 350 bar to 700 bar 0.63 % rdg % rdg. Using Digital Pressure Calibrator EPC 100 R&D & Hydraulic Pump

6 Last Amended on - Page 6 of 6 3. DIGITAL & DIAL VACUUM INDICATORS $ -0.8 bar to 0 bar 1.2 % rdg. Using Twin Mode Digital Vacuum calibrator EPC 40 R&D & Pneumatic Pump 4. PRESSURE - HYDRAULIC DIGITAL & DIAL PRESSURE INDICATORS 5. DIGITAL & DIAL VACUUM INDICATORS 10 bar to 700 bar 1.1 % rdg. Using Digital pressure calibrator EPC 100 R&D & Hydraulic Pump 0 to 760 mm Hg 1.5 % rdg. Using Twin Mode Digital Vacuum Calibrator EPC 40 R&D & Pneumatic Pump * Capability is expressed as an uncertainty () at a confidence probability of 95% $ Only in Permanent Laboratory Only for Site Calibration # The laboratory is also capable for site calibration however, the uncertainty at site depends on the prevailing actual environmental conditions and master equipment used. Φ Laboratory can also calibrate instruments/devices of coarser resolution / least count within the accredited range using same reference standard/ master equipment under the scope of accreditation.