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William Edward Gedge (1874) Patent for 'Solar Compasses', front cover. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 1. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 2. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 3. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 4. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 5. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 6. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 7. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 8. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', page 9. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', spec 1. 2588.
William Edward Gedge (1874) Patent for 'Solar Compasses', spec 2. 2588.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', page 1. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', page 2. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', page 3. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', page 4. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', reverse. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', spec 1. 10787.
George J. Gibbs (1906) Patent for 'Gibbs’ Heliochronometer', spec 2. 10787.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', front cover. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 1. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 2. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 3. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 4. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 5. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', page 6. 2660.
George Haseltine (1870) Patent for 'Instruments for obtaining solar measurements of latitude and time', spec. 2660.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 1. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 2. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 3. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', page 4. 2956.
William Renard Pilkington (1913) Patent for 'Pilkington’s Mechanical Equation Table', spec. 2956.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', page 1. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', page 2. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', page 3. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', page 4. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', page 5. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', spec 1. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', spec 2. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', spec 3. 15914.
William Renard Pilkington (1911) Patent for 'Pilkington’s Sol Horometer', spec 4. 15914.