Series:1H62 to 10H62 Range:-1/ 11 to 89-101 Division:0.1Deg.API with Accuracy 0.1Deg.API Length :335mm Series:21H62 to 40H62 Range:0-6 to 95-101 Division:0.1Deg.API with Accuracy 0.1Deg.API Length:168mm API:American Petroleum Institute as the main U.S. trade association for the oil and natural gas industry