🔍 Key Concepts
• How a megger insulation tester uses a non-linear analog scale with two sets of units (megohms on the left, ohms on the right)
• How to match the numbered index marks (1–9) along the bottom with the curved resistance scale above them
• The difference between megohms and ohms/kilohms, and which side of the scale the question is asking about
💭 Think About
• Look at the pointer position at "5" along the bottom and trace straight up to see exactly which value on the upper resistance scale it lines up with.
• Decide whether the value at that position lies on the megohm portion of the scale or on the lower ohm/kilohm portion.
• Compare the value you read off the megohm part of the scale with the answer choices; pay attention to where the decimal point belongs (0.35, 3.5, 35, 350).
✅ Before You Answer
• Confirm that you are reading from the left-hand megohm scale, not the right-hand ohm/kilohm scale.
• Verify which labeled tick marks (e.g., 2, 3, 4, 5 megohms, etc.) are just to the left and right of the vertical line from "5"; the correct reading should fall between them.
• Double-check the order of magnitude (is it less than 1 megohm, a few megohms, tens of megohms, or hundreds of megohms?) before choosing among the options.