✔️Item: Differential Chart Recorder Pen ✔️Ink Color: Red ✔️For Use With: Circular Chart Recorders ✔️Includes: 0.800 in Fine Line Nib for Hand Integrators ✔️Country of Origin (subject to change): United States

82-79-3412-06 - RED DIFFERENTIAL PENS Differential Chart Recorder Pen, For Use With Circular Chart Recorders, Ink Color Red, Includes 0.800 In. Fine Line Nib for Hand Integrators, Package Quantity 6