The “couple” is an intriguing unit that measures torque, essentially describing a pair of equal and opposite forces acting on a body in parallel planes. Despite its relatively obscure use in modern contexts compared to units like the newton-meter, the concept of a couple is fundamental in engineering and physics. It is vital in the analysis of systems that require rotational movements, such as gears, engines, and propeller shafts, highlighting the unit’s significance in various mechanical and structural applications.
Interestingly, what’s unique about a couple is that its effectiveness is independent of the point of rotation. This property allows engineers to simplify complex systems, focusing purely on the magnitude and direction of rotation rather than the specific pivot point, making their calculations both practical and efficient.
A “small gross” may sound peculiar in the world of measurements, yet it holds a significant niche in the realm of counting. A small gross equals 120 units, serving as a fascinating intermediate between a dozen and a gross. This unit reflects the duodecimal system’s influence, a base-12 number system used historically in trade and counting, particularly before the widespread adoption of the decimal system. While its usage is rarer today, it was once quite practical for merchandise packaging and bulk items, highlighting humanity’s penchant for diverse mathematical solutions in different eras. Rediscovering units like the small gross bridges the gap between historical trade practices and modern numerical systems, shedding light on how societies have quantified goods across centuries.
| Couples | Small Gross |
|---|---|
0
cp
|
0
sm-gr
|
0.5
cp
|
0.00833333
sm-gr
|
1
cp
|
0.0166667
sm-gr
|
1.5
cp
|
0.025
sm-gr
|
2
cp
|
0.0333333
sm-gr
|
2.5
cp
|
0.0416667
sm-gr
|
3
cp
|
0.05
sm-gr
|
3.5
cp
|
0.0583333
sm-gr
|
4
cp
|
0.0666667
sm-gr
|
4.5
cp
|
0.075
sm-gr
|
5
cp
|
0.0833333
sm-gr
|
5.5
cp
|
0.0916667
sm-gr
|
6
cp
|
0.1
sm-gr
|
6.5
cp
|
0.108333
sm-gr
|
7
cp
|
0.116667
sm-gr
|
7.5
cp
|
0.125
sm-gr
|
8
cp
|
0.133333
sm-gr
|
8.5
cp
|
0.141667
sm-gr
|
9
cp
|
0.15
sm-gr
|
9.5
cp
|
0.158333
sm-gr
|
10
cp
|
0.166667
sm-gr
|
10.5
cp
|
0.175
sm-gr
|
11
cp
|
0.183333
sm-gr
|
11.5
cp
|
0.191667
sm-gr
|
12
cp
|
0.2
sm-gr
|
12.5
cp
|
0.208333
sm-gr
|
13
cp
|
0.216667
sm-gr
|
13.5
cp
|
0.225
sm-gr
|
14
cp
|
0.233333
sm-gr
|
14.5
cp
|
0.241667
sm-gr
|
15
cp
|
0.25
sm-gr
|
15.5
cp
|
0.258333
sm-gr
|
16
cp
|
0.266667
sm-gr
|
16.5
cp
|
0.275
sm-gr
|
17
cp
|
0.283333
sm-gr
|
17.5
cp
|
0.291667
sm-gr
|
18
cp
|
0.3
sm-gr
|
18.5
cp
|
0.308333
sm-gr
|
19
cp
|
0.316667
sm-gr
|
19.5
cp
|
0.325
sm-gr
|
20
cp
|
0.333333
sm-gr
|
20.5
cp
|
0.341667
sm-gr
|
21
cp
|
0.35
sm-gr
|
21.5
cp
|
0.358333
sm-gr
|
22
cp
|
0.366667
sm-gr
|
22.5
cp
|
0.375
sm-gr
|
23
cp
|
0.383333
sm-gr
|
23.5
cp
|
0.391667
sm-gr
|
24
cp
|
0.4
sm-gr
|
24.5
cp
|
0.408333
sm-gr
|
25
cp
|
0.416667
sm-gr
|
25.5
cp
|
0.425
sm-gr
|
26
cp
|
0.433333
sm-gr
|
26.5
cp
|
0.441667
sm-gr
|
27
cp
|
0.45
sm-gr
|
27.5
cp
|
0.458333
sm-gr
|
28
cp
|
0.466667
sm-gr
|
28.5
cp
|
0.475
sm-gr
|
29
cp
|
0.483333
sm-gr
|
29.5
cp
|
0.491667
sm-gr
|
30
cp
|
0.5
sm-gr
|
30.5
cp
|
0.508333
sm-gr
|
31
cp
|
0.516667
sm-gr
|
31.5
cp
|
0.525
sm-gr
|
32
cp
|
0.533333
sm-gr
|
32.5
cp
|
0.541667
sm-gr
|
33
cp
|
0.55
sm-gr
|
33.5
cp
|
0.558333
sm-gr
|
34
cp
|
0.566667
sm-gr
|
34.5
cp
|
0.575
sm-gr
|
35
cp
|
0.583333
sm-gr
|
35.5
cp
|
0.591667
sm-gr
|
36
cp
|
0.6
sm-gr
|
36.5
cp
|
0.608333
sm-gr
|
37
cp
|
0.616667
sm-gr
|
37.5
cp
|
0.625
sm-gr
|
38
cp
|
0.633333
sm-gr
|
38.5
cp
|
0.641667
sm-gr
|
39
cp
|
0.65
sm-gr
|
39.5
cp
|
0.658333
sm-gr
|
40
cp
|
0.666667
sm-gr
|
40.5
cp
|
0.675
sm-gr
|
41
cp
|
0.683333
sm-gr
|
41.5
cp
|
0.691667
sm-gr
|
42
cp
|
0.7
sm-gr
|
42.5
cp
|
0.708333
sm-gr
|
43
cp
|
0.716667
sm-gr
|
43.5
cp
|
0.725
sm-gr
|
44
cp
|
0.733333
sm-gr
|
44.5
cp
|
0.741667
sm-gr
|
45
cp
|
0.75
sm-gr
|
45.5
cp
|
0.758333
sm-gr
|
46
cp
|
0.766667
sm-gr
|
46.5
cp
|
0.775
sm-gr
|
47
cp
|
0.783333
sm-gr
|
47.5
cp
|
0.791667
sm-gr
|
48
cp
|
0.8
sm-gr
|
48.5
cp
|
0.808333
sm-gr
|
49
cp
|
0.816667
sm-gr
|
49.5
cp
|
0.825
sm-gr
|
50
cp
|
0.833333
sm-gr
|
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