Leiden University Libraries Digital Collections

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Correspondence concerning chronometers, mainly with A. Hohwü, 1857-1911, NIMH, MEOB, 075: 54
Correspondence with the Navy Ministry, 1855-1938, NIMH, MEOB, 075: 14
Correspondence with various suppliers and Navy officers, 1856-1939, NIMH, MEOB, 075: 15
Draft and manuscript of Kaiser's De nieuwe kompaslampen en vloeistofkompassen der Nederlandsche marine, 1860, NIMH, MEOB, 075: 106
Draft of Kaiser's paper Inlichtingen omtrent de verbeterde vloeistofkompassen der Nederlandsche marine, 1862, NIMH, MEOB, 075: 108
Excerpts from foreign journals concerning the influence of iron ships on compasses, c. 1869, NIMH, MEOB, 075: 109
A letter from the Navy Minister (1861) about the transfer of the Navy collections of instruments to Leiden Observatory, and two letters concerning the testing of compasses, 1861, 1873-1874, NIMH, MEOB, 075: 19
Notification about exemption from stamp duty for the Verificateur, 1858,  NIMH, MEOB, 075: 13
Register of acquisitions and repairs of various instruments, including chronometers, compasses and sextants, 1858-1877, NIMH, MEOB, 075: 53
Register of chronometers of the Navy Ministry, until 1857, NIMH, MEOB, 075: 52
Report about nightly illumination of compasses, 1858, NIMH, MEOB, 075: 105
Report about the book by F.J. Stamkart on compasses aboard iron and wooden ships, 1861, NIMH, MEOB, 075: 107
Task description of the Inspector of Naval Instruments, by F. Kaiser, and list of staff members of the Verificatiebureau (1903), 1860, 1903, NIMH, MEOB, 075: 16