Nature :: Number of documents found: 4


(8242) The Chinese Water-balance Escapement

(8243) A working model of the mechanical escapement in Su Sung's astronomical clock tower

(8244) Accuracy of Astronomical Clocks
    Author: Eichelberger, W.W. :: Year Vol (No) Month (or Chapter/Auction item): 1907 75 no 1945 feb 7 :: Pages: 353
    Comments and/or Abstract > from Milham biography - copy from Univ. of Oregon Eugene

(8245) Spiral springs of Quartz
    Author: Boys, C.V. :: Year Vol (No) Month (or Chapter/Auction item): 1925 jun 20 :: Pages: 943-44
    Comments and/or Abstract > two letters on how to make a quartz spring