Latex free. Tycos 509 Series aneroids provide all the accuracy and reliability you expect from Tycos - at an affordable price. Lifetime calibration and manufacturing warranty. Precision, jeweled bearings resist wear for consistently accurate readings. Unique phosphor-bronze aneroid bellows ensure consistent pressure measurement. Visual check of accuracy on the dial. Strong die-cast zinc internal housing protects mechanism. The Wall style has an 8' coiled tubing with 90° swivel for flexible reading, 10° forward tile to reduce glare. The Mobile style has 360° swivel with adjustable height stand, and 4' coiled tubing.