Treatise on the principal mathematical instruments employed in surveying, levelling, and astronomy : explaining their construction, adjustments, and use. With an appendix, and tables / by Frederick W. Simms.

  • Frederick Walter Simms
Date:
1834
Catalogue details

Licence: Public Domain Mark

Credit: Treatise on the principal mathematical instruments employed in surveying, levelling, and astronomy : explaining their construction, adjustments, and use. With an appendix, and tables / by Frederick W. Simms. Source: Wellcome Collection.

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    continued. s 18™ 19™ 20™ 21™ 22™ 23™ 24™ 0 3083 3434 3805 4195 4604 5031 5478 1 3088 3441 3812 4202 4611 5039 5486 2 3093 3447 3818 4208 4618 5046 5494 3 3099 3453 3824 4215 4625 5053 5501 4 3106 3459 3831 4222 4632 5061 5509 5 3111 3465 3837 4228 4639 5068 5516 6 3117 3471 3S43 4235 4646 5075 5524 7 3123 3477 3850 4242 4653 5083 5531 8 3128 3483 3856 4248 4660 5090 5539 9 3134 3489 3863 4255 4667 5097 5547 10 3140 3495 3869 4262 4674 5105 5554 11 3146 3501 3875 4269 4681 5112 5562 12 3151 3507 3882 4275 4688 5119 5570 13 3157 3513 3888 4282 4695 5127 5577 14 3163 3519 3895 4289 4702 5134 5585 15 3169 3525 3901 4295 4709 5141 5593 16 3175 3531 3907 4302 4716 5149 5600 17 3180 3538 3914 4309 4723 5156 5608 18 3186 3544 3920 4316 4730 5163 5616 19 3192 3550 3927 4322 4737 5171 5623 20 3198 3556 3933 4329 4744 5178 5631 21 3204 3562 3940 4336 4751 5186 56391 22 3209 3568 3946 4343 4758 5193 56471 23 3215 3574 3952 4350 4766 5200 5654] 24 3221 3581 3959 4356 4773 5208 5662 25 3227 3587 3965 4363 4780 5215 5670 26 3233 3593 3972 4370 4787 5223 5678 27 3239 3599 3978 4377 4794 5230 5685 28 3244 3605 3985 4383 4801 5237 5693 29 3250 3611 3991 4390 4808 5245 5701 30 3256 3618 3998 4397 4815 5252 5709 31 3262 3624 4004 4404 4822 5260 5716] 32 3268 3630 4011 4411 4829 5267 5724! 33 3274 3636 4017 4418 4837 5275 5732 34 3280 3642 4024 4424 4844 5282 5740: 35 3286 3648 4030 4431 4851 5290 5747 36 3291 3655 4037 4438 4858 5297 5755 37 3297 3661 4043 4445 4865 5305 5763 38 3303 3667 4050 4452 4872 5312 5771 39 3309 3673 4056 4459 4880 5320 5779 40 3315 3680 4063 4465 4887 5327 5786 41 3321 3686 4070 4472 4894 5335 5794 42 3327 3692 4076 4479 4901 5342 5802 43 3333 3698 4083 4486 4908 5350 581C 44 3339 3705 4089 4493 4916 5357 5818 45 3345 3711 4096 4500 4923 5365 5826 46 3351 3717 4102 4507 4930 5372 5833 47 3357 3723 4109 4514 4937 5380 5841 48 3363 3730 4116 4520 4944 5387 5849 49 3369 3736 4122 4527 4952 5395 5857 50 3375 3742 4129 4534 4959 5402 5865 51 3380 3749 4135 4541 4966 5410 5873 52 3386 3755 4142 4548 4973 5417 5881 53 3392 3761 4149 4555 4981 5425 5888 54 3398 3767 4155 4562 4988 5433 5896 55 3404 3774 4162 4569 4995 5440 5904 56 3410 3780 4168 4576 5002 5448 5912 57 3416 3786 4175 4583 5010 5455 5920 58 3422 3793 4182 4590 5017 5463 5928 59 3428 3799 4188 4597 5024 5470 5936 60 3434 3805 4195 1604 5031 5478 5944 Showing the Length of a Second of Longitude and Latitude in English Feet, on the Earth’s Surface. Compression = -jJo Computed by Mx.Baily’s Formula XLIII. Lat. Second ot' Long. 'econd oil Latitude Lat. Second, ot Long. Second ot Latitude. o Ft. Ft. o Ft. Ft. 0 101.42 101.42 35 83. 17 101.75 1 101.40 36 82. 15 2 101.3( 37 81.10 3 101.28 38 80.02 4 101.17 39 78. 92 5 101. 03 101.43 40 77. 80 101.84 6 100.87 41 76. 65 7 100.67 42 75.48 8 100.44 43 74.29 9 100.18 44 73.07 10 99.89 101.45 45 71. 83 101.93 11 99.57 46 70.57 12 99.22 47 69.29 13 98. 84 48 67. 99 14 98.43 49 66. 66 15 97.99 101.49 50 65. 32 102. 02 16 97.52 51 63. 95 17 97.02 52 62. 57 18 96. 49 53 61. 17 19 95.44 ] 54 59. 75 20 95. 36 101.54 55 58.30 102. 11 21 94. 74 56 56. 84 22 94.09 57 55. 37 23 93.41 58 53. 87 24 92. 70 59 52. 36 25 91.97 101. 60 60 50.84 102.19 26 91.21 6i 49.30 27 90.43 62 47. 74 28 89. 62 63 46. 17 29 88. 77 64 44. 58 30 87.90 101.67 65 42. 98 102.26 31 87.01 66 41.37 32 86. 09 67 39.74 33 85. 14 68 38. 10 34 84. 17 69 36. 45 << If the equatorial diameter of the earth be assumed equal to 71)24 miles, a degree of longitude at the equator will be equal to 69.15 miles = 365110 feet; and consequently one second in time at the equator will be equal to 1521.3 feet.”
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