Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by material processed]
7. textile working equipment
8. [textile fabricating tools and equipment]
9. fabric testers

Anotations

Scope note:

Devices that utilize the vibroscope method, based on the principle of string vibration, to measure the linear density of textile fibers as determined by the tension and length of fibers vibrating at resonance. By measuring the natural vibration frequency of fibers to determine the amount of fibers present in a cross-section of yarn, these devices are additionally able to evaluate the fiber's porosity and filtration resistance.