ITI Interview – Specialized/Chemical/Aero Trades — 17 trades, 340 interview questions. Click a trade to see its 20 Q&A. Instrument Mechanic 20 Q&A Q1. What does an Instrument Mechanic do? An Instrument Mechanic installs, calibrates, maintains, and repairs measuring and control instruments used in industries, such as pressure gauges, flow meters, temperature sensors, and control valves. Q2. What is calibration and why is it important for instruments? Calibration is the process of checking and adjusting an instrument's accuracy against a known standard, important because it ensures reliable and precise measurements in industrial processes. Q3. What is the difference between analog and digital instruments? Analog instruments display readings using a pointer/scale and continuous signals, while digital instruments display readings as numeric values using digital signal processing. Q4. What is a pressure gauge and how does it work? A pressure gauge measures the pressure...