Product Description. Very handy gage to quickly determine the pitch of various threads. Made of high quality polished tool steel. Features a locking device at both ends to securely lock the leaves. All leaves clearly marked with size. Comes in a plastic pouch. Pitches included: Combination-Whitworth Standard 55° and Metric Standard 60° Threads - 4G, 4 1/2G, 5G, 6G, 7G, 8G, 9G, 10G, 11G, 12G, 13G, 14G, 16G, 18G, 19G, 20G, 22G, 24G, 25G, 26G, 28G, 30G, 32G, 36G, 40G, 48G, 60G, 62G & 0.25, 0.3, 0.35, 0.4, 0.45, 0.50, 0.6, 0.70, 0.75, 0.80, 0.9, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0mm.