General Studies · Metrology and Gauges
मेट्रोलॉजी प्रयोगशालाओं में उपयोग किए जाने वाले एंगल गेज (Angle gauges) आमतौर पर किस सामग्री से बने होते हैं?
- 1प्लास्टिक
- 2लकड़ी
- 3हार्दन्ड स्टील (Hardened steel)✓
- 4कार्बन फाइबर
सही उत्तर देखें
हार्दन्ड स्टील (Hardened steel)
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