Optical Plane Face Glasses

• Set consists of four plan glasses with thicknesses of 15.62 / 15.75 / 15.87 / 16.00 mm
• Diameter 30 mm
• Flatness of the measuring surfaces: 0.1 µm
• Parallelism of the measuring surfaces: 0.6 µm

For checking the parallelism and flatness of the measuring surfaces
of micrometers with a measuring range of 0-25 mm !!

• Set consists of four plan glasses with thicknesses of 40.62 / 40.75 / 40.87 / 41.00 mm
• Diameter 30 mm
• Flatness of the measuring surfaces: 0.1 µm
• Parallelism of the measuring surfaces: 0.6 µm

For checking the parallelism and flatness of the measuring surfaces
of micrometers with a measuring range of 25-50 mm !!

• Set consists of four plan glasses with thicknesses of 65.62 / 65.75 / 65.87 / 66.00 mm
• Diameter 40 mm
• Flatness of the measuring surfaces: 0.1 µm
• Parallelism of the measuring surfaces: 0.6 µm

For checking the parallelism and flatness of the measuring surfaces
of micrometers with a measuring range of 50-75 mm !!

• Set consists of four plan glasses with thicknesses of 90.62 / 90.75 / 90.87 / 91.00 mm
• Diameter 50 mm
• Flatness of the measuring surfaces: 0.1 µm
• Parallelism of the measuring surfaces: 0.6 µm

For checking the parallelism and flatness of the measuring surfaces
of micrometers with a measuring range of 75-100 mm !!