चत्वारिंशत्कलाः नालिका ॥ कZ_०२.२०.३४ ॥
catvāriṃśatkalāḥ nālikā
Forty kalās constitute one nālikā (a standard measured period, typically by a water-clock).
Nālikā is operational: it can be measured consistently using devices (water-clock), enabling uniform official timekeeping across offices.
1 nālikā = 40 kalā.