JTB Spot Elevation is an app to insert surveying Spot Elevation blocks and manage them on an Edit Properties spreadsheet.
Run SPINSERT command to insert Spot Elevation block. You can enter elevation value at command prompt or via a dialog window.
If your drawing have these spot elevation already drawn by lines and texts, you can run SPCONVERT command to convert these lines and texts to standard Spot Elevation blocks.
Run SPEDPROPS command to open a design spreadsheet window for editing many Spot Elevations all at once. On this spreadsheet, you can renumber Spot Elevations in increasing order, adjust their elevations by a specified distance, change their colors, scales, unit settings, and many more. This is a powerful command to manage Spot Elevation properties.
The free Trial version usage is limited to drawing file size of less than 700 objects only.
JTB Spot Elevation is available as an AutoCAD app on the Plug-ins or Add-ins tab.
More about and download for JTB Spot Elevation here.