The function of the device illustrated is to...

🔍 Key Concepts

• Identify what kind of handheld instrument is shown by looking at the dial, pointer, and rubber-tipped shaft • Think about which of the choices would logically use a rubber tip pressed against a rotating part • Recall what typical instruments for conductivity and density measurements look like (probes, hydrometers, cells, not rotating shafts)

💭 Think About

• Ask yourself which option actually requires contact with a spinning shaft through a small rubber tip • Consider what kind of quantity would be indicated on a single circular dial with a pointer and a stop button to freeze the reading • Eliminate any answers that would normally require fluid samples, electrical connections, or comparison of phases rather than mechanical contact

✅ Before You Answer

• Verify which choice directly involves mechanical rotation rather than liquid or electrical properties • Check that the device shown could reasonably be handheld and applied to a running machine in the engine room • Confirm that the remaining option matches the use of a dial with evenly spaced numerical markings around the circumference

The function of the device illustrated is to __________. See illustration GS-0117.

assist in synchronizing generators

measure the speed of a rotating shaft

test for condensate conductivity

measure brine density

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🔍 Key Concepts

💭 Think About

✅ Before You Answer