Prize Essay On the Construction of a Simple and Mechanically Perfect WatchKarl Moritz GroßmannSold outTrack
Prize Essay On The Construction Of A Simple And Mechanically Perfect Watch (1891)Karl Moritz GroßmannSold outTrack
A Practical and Theoretical Treatise on the Detached Lever Escapement for Watches and Time PiecesKarl Moritz GroßmannSold outTrack