Natyashastra
प्रमाणमेषां निर्दिष्टं हस्तदण्डसमाश्रयम् । शतं चाष्टौ चतुःषष्टिर्हस्ता द्वात्रिंशदेव च ॥ ९॥
The measurements for these are based on the length of a hand (hastadanda). They are 108, 84, and 64 hands, and for the inferior type, it is 32 hands.
english translation
pramANameSAM nirdiSTaM hastadaNDasamAzrayam । zataM cASTau catuHSaSTirhastA dvAtriMzadeva ca ॥ 9॥
hk transliteration by Sanscript