# Step 1: Analyze the Given Views The image shows a mechanical part called a "Supported Rod Base" with two main views: - **Top View (Plan)** - **Front View (Elevation or Section)** **Top View Details:** - Multiple concentric circles (representing different diameters: 2", 15/16", 11/16") - Bolt holes (3/16" diameter) spaced around the base **Front View Details:** - Shows the side profile with height and support ribs - Dashed lines indicate hidden features (holes, internal diameters) **Explanation:** By examining both views, you understand the geometry and spatial relationships of the part’s features (holes, diameters, and supports). --- # Step 2: Draw the Correct Revolution View To draw the **revolution view** (rotational or sectional view): 1. **Project the Profile:** Use the front view (side profile) as the basis for rotation. 2. **Revolve the Contour:** Imagine rotating this profile 360° around its central vertical axis. This will generate the solid form of the part, showing how the cylindrical and circular features blend together. - The outermost profile will form the base diameter (2"). - The inner cylinders will form the central hole (11/16") and the raised boss (15/16"). - The holes (3/16") will appear as small circles or as hidden lines in the sectional view. **Explanation:** The revolution view is a cross-sectional side view that reveals all internal and external features as if the part were sliced and rotated. This is especially useful for understanding complex cylindrical parts. --- # Final Answer To create the correct revolution view: - Use the side (front) profile and rotate it around the center axis. - Show all diameters and holes in correct proportions. - The resulting view will clearly display the internal/external cylindrical features and their spatial arrangement. **Summary:** Analyzing the given orthographic views allows you to project and sketch the revolution view, providing a clear understanding of the part’s full geometry.

# Step 1: Analyze the Given Views The image represents a mechanical part known as a "Supported Rod Base" with two distinct views: - **Top View (Plan)** - **Front View (Elevation or Section)** ### Top View Details: - **Concentric Circles:** Represent various diameters: - **2 inches** (outermost) - **15/16 inches** (middle) - **11/16 inches** (innermost) - **Bolt Holes:** 3/16 inch diameter, evenly spaced around the base. ### Front View Details: - **Side Profile:** Shows the height and any supporting ribs. - **Dashed Lines:** Indicate hidden features such as holes or internal diameters. **Explanation:** This analysis helps understand the geometry and spatial relationships of the part’s features, including the arrangement of holes and varying diameters. --- # Step 2: Draw the Correct Revolution View To create the **revolution view**: 1. **Project the Profile:** Utilize the front view as the reference for rotation. 2. **Revolve the Contour:** Imagine rotating the front profile 360° around its vertical axis. This will visualize the solid form of the part, illustrating how the cylindrical and circular features integrate. ### Key Features: - **Base Diameter:** 2 inches (outermost) - **Central Hole:** 11/16 inch (innermost) - **Raised Boss:** 15/16 inch (middle) - **Holes:** 3/16 inch appear as small circles or hidden lines in the sectional view. **Explanation:** The revolution view serves as a cross-sectional side view, displaying all internal and external features as if the part were sliced and rotated. This method is crucial for understanding complex cylindrical parts. --- # Final Answer To successfully create the revolution view: - Use the side (front) profile and rotate it around the center axis. - Accurately represent all diameters and holes in correct proportions. The resulting view will effectively depict the internal and external cylindrical features along with their spatial arrangement. **Summary:** By analyzing the orthographic views, we can project and sketch the revolution view, leading to a comprehensive understanding of the part’s geometry.