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The mesopotamian Nippur cubit measured 518.5 mm ± 1 mm.
BI-SMH defines a so-called « raw Nippur cubit » of 518.4 mm and an « idealistic Nippur cubit » of 518.616 mm.
The ancient measures are always relative. Example : The pygon is 1¼ foot or 20 digits. But its absolute value depends on the length of the choised digit.
¾
12
spithame
1½
24
pechys
3
48
yard
6
96
orguia (klafter)
7 / 8
14
(semi-neilos)
1¾
28
neilos
3½
56
(double-neilos)
7
112
(quadruple neilos)
1
16
pous (foot)
ft.
dgt.
2
32
nibw
4
64
aune
8
128
(double-aune)
9 / 8
18
pygme
2¼
36
(semi-xylon)
4½
72
xylon
9
144
(double-xylon)
1¼
20
pygon
2½
40
bema (step)
5
80
passus (pace)
10
160
akaina (perch)
27 digits : arabikos
30 digits : mesopotamos
The 27- and 30-digit-cubit are respectively the arabic and the mesopotamian cubit.
The Egyptians shared the 30-digit-Nippur-cubit into 28 parts.
The Nippur cubit is actually a mesopotamos, as a neilos, it defined the Roman foot.
Page still in work...
The ratios between seven important idealistic digit measures.
Digit
French
Austrian
English
Egytian
Viennese
Roman
Nippur
1 : 1
35 : 36
15 : 16
625 : 672
45 : 49
175 : 192
245 : 288
36 : 35
27 : 28
375 : 392
324 : 343
7 : 8
16 : 15
28 : 27
125 : 126
48 : 49
49 : 54
672 : 625
392 : 375
126 : 125
864 : 875
49 : 50
343 : 375
49 : 45
343 : 324
49 : 48
875 : 864
1715 : 1728
25 : 27
192 : 175
50 : 49
1728 : 1715
14 : 15
288 : 245
8 : 7
54 : 49
375 : 343
27 : 25
15 : 14
Foot (mm)
325.14048
316.1088
304.8192
302.4
298. 722 816
296.352
276.5952
The ratio between the raw Nippur - cubit - digit and the idealistic Nippur - cubit - digit is 2401 : 2400 = 1.000416, one komma.
The idealistic Viennese foot and idealistic digital foot (298. 598 4 mm) are intrinsically the same measure, by this komma.
This idealistic and the scientific digital foot ( 298. 582 140 625 mm ) differ by a digital komma. This factor is about 0. 999 946.
This page is online since 2007, March 15 ;