Bridge gage readings are to be taken on the...

Bridge gage readings are to be taken on the...

Question 1 of 270705eccefa0bacbc34ba4d47078

Bridge gage readings are to be taken on the bearing shown in the illustration. You would use the indicated 3 3/4"R to __________. See illustration SE-0017.

Question 1 of 27070

Q

Bridge gage readings are to be taken on the bearing shown in the illustration. You would use the indicated 3 3/4"R to __________. See illustration SE-0017.

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🔍 Key Concepts

• Bridge gauge use on propeller shaft/bearing clearances • Meaning of a dimension marked as 3 3/4ʺ R in a mechanical drawing (what does R usually stand for?) • Where the gauge must be positioned, relative to the shaft centerline and bearing surface, to get an accurate clearance reading

💭 Think About

• Look at exactly where the arrow for 3 3/4ʺ R starts and ends on the illustration. What two geometric points or surfaces is that radius describing? • Think about how a bridge gauge actually sits over a shaft: What part of the tool needs to match the curvature of the shaft/bearing so that your reading is valid? • Ask yourself: Is that radius used for labeling the bearing, locating the load, locating the gauge, or measuring an angle?

✅ Before You Answer

• Confirm that R in a drawing dimension almost always means radius, not angle or distance along a flat line. • Verify from the picture that the 3 3/4ʺ radius is drawn from the center of the shaft out to a curved surface involved with the gauge setup. • Decide which option best matches the idea of using a known radius from the shaft center to correctly position something for the reading (focus on what must be correctly positioned for an accurate bridge gauge measurement).