Distance Measuring Patents (Class 33/700)
- Digital indicator (Class 33/784)
- Fluid indicator (Class 33/785)
- Extensometer (Class 33/787)
- Optical indicator (Class 33/791)
- Rotary indicator (Class 33/792)
- Rectilinear indicator (Class 33/806)
- Pivoted type with scale (Class 33/807)
- Exstensible-rule type (Class 33/809)
- Beam type with scale (Class 33/810)
- Micrometer (Class 33/813)