+----------------------------------------------------------------------+ |_t deg._|Correction.||_t deg._|Correction.||_t deg._|Correction.||_t deg._|Correction.| |----+-----------++----+-----------++----+-----------++----+-----------| | 32 | -0.0014 || 48 | -0.0010 || 64 | +0.0002 || 80 | +0.0020 | | 33 | .0014 || 49 | .0009 || 65 | .0003 || 81 | .0021 | | 34 | .0014 || 50 | .0009 || 66 | .0004 || 82 | .0023 | | 35 | .0014 || 51 | -0.0008 || 67 | .0005 || 83 | .0024 | | 36 | .0014 || 52 | .0008 || 68 | +0.0006 || 84 | .0026 | | 37 | .0014 || 53 | .0007 || 69 | .0007 || 85 | +0.0027 | | 38 | -0.0014 || 54 | .0006 || 70 | .0008 || 86 | .0029 | | 39 | .0013 || 55 | .0006 || 71 | .0009 || 87 | .0030 | | 40 | .0013 || 56 | -0.0005 || 72 | .0010 || 88 | .0032 | | 41 | .0013 || 57 | .0004 || 73 | .0011 || 89 | .0033 | | 42 | .0013 || 58 | .0003 || 74 | +0.0013 || 90 | +0.0035 | | 43 | .0012 || 59 | .0003 || 75 | .0014 || 91 | .0036 | | 44 | -0.0012 || 60 | .0002 || 76 | .0015 || 92 | .0038 | | 45 | .0011 || 61 | -0.0001 || 77 | .0016 || 93 | .0040 | | 46 | .0011 || 62 | 0.0000 || 78 | .0018 || 94 | .0041 | | 47 | -0.0010 || 63 | +0.0001 || 79 | +0.0019 || 95 | +0.0043 | +----------------------------------------------------------------------+ TABLE for reducing observations made with a GLASS HYDROMETER, assuming the linear expansion of glass to be 0.00000463 for 1 deg. F. The correction is additive for temperatures above 62 deg., and subtractive for temperatures below 62 deg.