hydrostatic bubbles

type of hydrometer invented in 1757 by Alexander Wilson of Glasgow

en-US/ˌhaɪdɹəˈstædɪk ˈbʌbəlz/
en-GB/haɪdɹəʊstætɪk ˈbʌbəlz/

ক্যাটাগরি:

hydrometer