Slider for harmonic wave apparatus
1831-1870
Slider for harmonic wave apparatus
1831-1870
Slider for harmonic wave apparatus
1831-1870
Messenger (Slider) for Triggering Reversing Thermometer, 1970-1977
1970-1977
Slider for harmonic wave apparatus
1831-1870
Slider for harmonic wave apparatus
1831-1870
Slider for harmonic wave apparatus
1831-1870