Stainless Steel 3 Hole Barograph Arm

Designed to Russell Scientific specifications and manufactured in the UK, this RSI stainless steel 3-hole barograph arm is suitable for use on a wide range of precision barographs, including specialised and legacy instruments.

Barograph pen arms are extremely delicate and should be replaced if they become bent, worn, or corroded over time. A distorted arm can stick or jam against the barograph drum, leading to ink blotting and loss of recorded pressure data. A clean, straight, and correctly aligned 3-hole arm ensures smooth movement and allows the nib to draw a clear, crisp arc across the recording paper for accurate and reliable pressure readings.

• Length: 17.7 cm

• Hole spacing: 0.9 cm (between each hole)

• Pen width: 1 cm