कामिक आगम: पूर्व भाग (अष्टाविंशति मूल शैव आगमों का प्रथम एवं सर्वोच्च आगम महाकोश)

That which is exclusively told as parama’n.u is perceptible to the eyes of the yogis
only. From the parama’n.u all other measures such as car-dust(molecule), hair-tip,
nit, louse and barely corn are obtained. Of these measures, the succeeding measure
is eight times the preceding one. As detailed in this S’iva S’a’stra, the an’gula measure
is of three kinds – the smallest, the intermediate and the largest. 6 yavas make one
smallest an’gula. 7 yavas make one intermediate an’gula. 8 yavas make one largest
an’gula.
One parama’n.u measures one part of 1,90,650 of an English inch. Hence
it is imperceptible to the unaided eye.
8 parama’n.us = 1 car-dust
8 car-dusts = 1 hair tip
8 hair tips = 1 nit(li’ks”a)
8 nits = 1 louse(yu’ka)
8 lice = 1 barely corn(yava)
8 barely corns = 1 an’gula
6 barely corns constitute 1 an’gula of smallest type
7 barely corns constitute 1 an’gula of intermediate type
8 barely corns constitute 1 an’gula of largest type
शालिभिश्च त्रिभिस्सार्धैश्चतुर्भिश्च तथायतैः ।। ४
शाल्युद्भवस्समाख्यातास्त्वङ्गुलास्त्रिविधास्त्विह ।
s’a’libhis’ca tribhissa’rdhais’ caturbhhis’ca tatha’yataih // 4
s’a’lyudbhava’s sama’khya’ta’s tvan’gula’strividha’stviha /
There is another type of an’gula which is also of three kinds. The length of 3 paddy
grains is the smallest an’gula. That of three and a half paddy grains is the intermediate
an’gula. And that of 4 paddy grains is the largest an’gula. These are called the
‘paddy-born measure’.