Precision Spot Welding Machine , Mini Spot Welding Machine with Single Head or Parallel Gap Precision Spot Welder not only possesses the general features of capacitor discharge spot welding machine, but also possesses other performance features as follows, 1. Rigid welded Steel frame. 2. Air Operated. 3. Low-Inertia Guided Ram with Spring Force adjustment. 4. Dual Rams on Parallel Gap Model. 5. Precision Bimba Air Cylinders. 6. Ram guiding by Cross Roller Instrument Slides. 7