Seco Pole Peg Adjusting Jig The Seco 5195-01 Pole Peg Adjusting Jig is a practical tool designed for accurate adjustment and calibration of pole vials in a controlled environment. It provides a stable setup for aligning poles before fine-tuning the bubble, helping ensure reliable field measurements. Key Features • Designed for pole vial adjustment and calibration • ‘L-bracket’ base supports prism pole point positioning • Adjustable top piece for centering the pole • Ideal for office or shop calibration setups