Welcome to Allen Instruments online store Welcome to our online store Quick Release Pole Clamp w/ Compass and Vial SKU 5200-155-A $75.95 In stock Quantity: 1 Add to Bag Product Details Seco Claw Quik-Release Pole Clamp, Compass, 40 min vial. Clamping function is limited so over-tightening cannot occur. Designed to fit a pole diameter of 1.25in (32mm). Save this product for later Favorite