Dial indicators are precision measuring tools with a myriad of applications in the machine shop. Once you move beyond the basic machining operations you will definitely want to have one or more of these in your workshop.  

Here are some uses for a dial indicator:   

• Bump Steer Gauge  
• Bell Housing Indicator 
• Centering Cylindrical stock in a 4-jaw chuck  
• Determining accuracy of lathe or mill alignment 
• Determining runout of lathe spindle and chucks  
• Aligning stock for milling  
• Monitoring depth of drilled holes  
• Monitoring vertical movement of milling head