as District Supervisor

Leeuwenhoek and fellow camerbewaarder Daniel Bogaert were appointed at the same time on October 10, 1666.

Each district supervisor reported to Leeuwenhoek and Bogaert. Their job was to supervise the supervisors of Delft's 16 districts and then report to the magistrates and mayors. It is not clear how accountable they would be if problems arose.

For example, in 1667, Leeuwenhoek received his yearly salary in three parts. The first three entries in the page below from the Accounts of the Treasurer (Rekeningen van de Thesaurier) continue Leeuwenhoek's entry from the previous page. On the 24th of January, he received 400 gulden for his duties as camerbewaarder. He received 54 gulden for cleaning their chamber, which being larger than the mayors' chambers was also used for meetings of the Veertigraad and the civic guard (schutters) as well as the magistrates. Finally:

Den selven comt noch als Wijckmeester Generaal een wedde van ... L gl

The same additionally as district supervisor a salary of ... 50 gulden

Note that Daniel Bogaert got the same salary and in addition 9 gulden per year for keeping track of the keys of the building's guards (van de sleutels van de wacht)

Bogaert died in 1681, but Leeuwenhoek continued receiving payments until his death, even though the office was discontinued in 1711.

OAD inv 678 Rekeningen van de Thesaurier
vol 61 (1667) page 120