Giltay, J.W.

5

Kipp en Zonen, P.J.

5

Marius, J.C. Th.

2

Admiraal, C.

1

Breguet

1

Brune, L.R.

1

Deene, J.F. van

1

Dollond, P. & J.

1

Eduard Wenckebach, Amsterdam

1

Geissler, H.

1

Haas, J.B.

1

Heinze

1

Hermann & Pfister

1

Hohwü, Andreas

1

Metropolis Gas

1

Pintsch, Julius

1

Prins, Hendrik

1

Salleron, J.

1

Glass

17

brass

7

Mahogany

5

Iron

3

Paper

2

Boxwood

1

Cork

1

ivory

1

mercury

1

nickel

1

nickel-plated

1

opal glass

1

Walnutwood

1

Wood

1

thermometer

18

barometer

3

gasfotometrie apparaat

1

gasmeter

1

hypsometer

1

osmosemeter

1

pyrometer

1