The mil is a unit of measurement commonly used in various fields, including manufacturing and meteorology. Originating from the Latin word “millesimum,” meaning “thousandth,” a mil represents one-thousandth of an inch (0.001 inches). Its precision makes it indispensable for industries where exact measurements are crucial, such as printing and engineering. In the world of meteorology, mils are used to measure precipitation, helping to forecast weather conditions accurately.
Interestingly, the term “mil” is also often used interchangeably with “thou,” especially in the machining and engineering sectors. This small yet significant unit plays a vital role in ensuring quality control and standardization across different industries, highlighting its essential presence in our everyday life and technological advancements.
The US Survey Foot might seem like an unassuming unit, but it’s steeped in the very history of American land measurement. Unlike the International Foot, which is precisely defined as 0.3048 meters, the US Survey Foot is ever-so-slightly longer at approximately 0.3048006 meters. This minuscule difference stems from surveying practices established in the early 19th century and has historically been used for mapping and property delineation across the United States. Integral to the country’s westward expansion, the US Survey Foot played a pivotal role in the division and sale of public lands—underscoring its foundational impact on both real estate and infrastructure.
Despite its historical significance, the US Survey Foot was officially deprecated at the end of 2022, as the US moves towards a unified use of the International Foot for federal geodetic surveys. This transition simplifies engineering and scientific calculations, streamlining US standards with global practices. The legacy of the US Survey Foot, however, serves as a fascinating footnote in the story of American land development, marking an era when precise measurements charted the course of a growing nation.
Mils | US Survey Feet |
---|---|
0
mil
|
0
ft-us
|
10
mil
|
0.000833332
ft-us
|
20
mil
|
0.00166666
ft-us
|
30
mil
|
0.0025
ft-us
|
40
mil
|
0.00333333
ft-us
|
50
mil
|
0.00416666
ft-us
|
60
mil
|
0.00499999
ft-us
|
70
mil
|
0.00583332
ft-us
|
80
mil
|
0.00666665
ft-us
|
90
mil
|
0.00749999
ft-us
|
100
mil
|
0.00833332
ft-us
|
110
mil
|
0.00916665
ft-us
|
120
mil
|
0.00999998
ft-us
|
130
mil
|
0.0108333
ft-us
|
140
mil
|
0.0116666
ft-us
|
150
mil
|
0.0125
ft-us
|
160
mil
|
0.0133333
ft-us
|
170
mil
|
0.0141666
ft-us
|
180
mil
|
0.015
ft-us
|
190
mil
|
0.0158333
ft-us
|
200
mil
|
0.0166666
ft-us
|
210
mil
|
0.0175
ft-us
|
220
mil
|
0.0183333
ft-us
|
230
mil
|
0.0191666
ft-us
|
240
mil
|
0.02
ft-us
|
250
mil
|
0.0208333
ft-us
|
260
mil
|
0.0216666
ft-us
|
270
mil
|
0.0225
ft-us
|
280
mil
|
0.0233333
ft-us
|
290
mil
|
0.0241666
ft-us
|
300
mil
|
0.025
ft-us
|
310
mil
|
0.0258333
ft-us
|
320
mil
|
0.0266666
ft-us
|
330
mil
|
0.0274999
ft-us
|
340
mil
|
0.0283333
ft-us
|
350
mil
|
0.0291666
ft-us
|
360
mil
|
0.0299999
ft-us
|
370
mil
|
0.0308333
ft-us
|
380
mil
|
0.0316666
ft-us
|
390
mil
|
0.0324999
ft-us
|
400
mil
|
0.0333333
ft-us
|
410
mil
|
0.0341666
ft-us
|
420
mil
|
0.0349999
ft-us
|
430
mil
|
0.0358333
ft-us
|
440
mil
|
0.0366666
ft-us
|
450
mil
|
0.0374999
ft-us
|
460
mil
|
0.0383333
ft-us
|
470
mil
|
0.0391666
ft-us
|
480
mil
|
0.0399999
ft-us
|
490
mil
|
0.0408333
ft-us
|
500
mil
|
0.0416666
ft-us
|
510
mil
|
0.0424999
ft-us
|
520
mil
|
0.0433332
ft-us
|
530
mil
|
0.0441666
ft-us
|
540
mil
|
0.0449999
ft-us
|
550
mil
|
0.0458332
ft-us
|
560
mil
|
0.0466666
ft-us
|
570
mil
|
0.0474999
ft-us
|
580
mil
|
0.0483332
ft-us
|
590
mil
|
0.0491666
ft-us
|
600
mil
|
0.0499999
ft-us
|
610
mil
|
0.0508332
ft-us
|
620
mil
|
0.0516666
ft-us
|
630
mil
|
0.0524999
ft-us
|
640
mil
|
0.0533332
ft-us
|
650
mil
|
0.0541666
ft-us
|
660
mil
|
0.0549999
ft-us
|
670
mil
|
0.0558332
ft-us
|
680
mil
|
0.0566666
ft-us
|
690
mil
|
0.0574999
ft-us
|
700
mil
|
0.0583332
ft-us
|
710
mil
|
0.0591665
ft-us
|
720
mil
|
0.0599999
ft-us
|
730
mil
|
0.0608332
ft-us
|
740
mil
|
0.0616665
ft-us
|
750
mil
|
0.0624999
ft-us
|
760
mil
|
0.0633332
ft-us
|
770
mil
|
0.0641665
ft-us
|
780
mil
|
0.0649999
ft-us
|
790
mil
|
0.0658332
ft-us
|
800
mil
|
0.0666665
ft-us
|
810
mil
|
0.0674999
ft-us
|
820
mil
|
0.0683332
ft-us
|
830
mil
|
0.0691665
ft-us
|
840
mil
|
0.0699999
ft-us
|
850
mil
|
0.0708332
ft-us
|
860
mil
|
0.0716665
ft-us
|
870
mil
|
0.0724999
ft-us
|
880
mil
|
0.0733332
ft-us
|
890
mil
|
0.0741665
ft-us
|
900
mil
|
0.0749999
ft-us
|
910
mil
|
0.0758332
ft-us
|
920
mil
|
0.0766665
ft-us
|
930
mil
|
0.0774998
ft-us
|
940
mil
|
0.0783332
ft-us
|
950
mil
|
0.0791665
ft-us
|
960
mil
|
0.0799998
ft-us
|
970
mil
|
0.0808332
ft-us
|
980
mil
|
0.0816665
ft-us
|
990
mil
|
0.0824998
ft-us
|
1000
mil
|
0.0833332
ft-us
|
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