SC640 - 400A Swivel Clamp Meter Dual Display | InrushFieldpiece SC640 400A Swivel Clamp Meter Dual Display Inrush The top of the line SC640 clamp meter helps HVACR professionals do more everyday. The SC640 clamp meter is packed with more features and measurements than any clamp meter in the HVACR industry. The loaded SC640 features lead storage, a swivel head, test lead holder, heavy duty magnetic strap, jaw flashlight, and a backlight on the dial so you can easily choose the right measurement in poorly