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Leon Chao (Fed)

Publications

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Patents (2018-Present)

The photo shows the entire ENTR_v2 measurement setup that was recently deployed for field testing to Nellis Air Force Base. ENTR_v2 along with electronics and a laptop for controlling the system are depicted. A commercial red colored torque screwdriver is shown as an example of a tool which can be calibrated by ENTR.

Electronic Torque Realization Apparatus

NIST Inventors
Stephan Schlamminger and Leon Chao
ENTR (Electronic NIST Torque Realizer) is a table-top-sized device designed for generating and measuring torques.

Absolute Mass Balance

NIST Inventors
Leon Chao and Jon R. Pratt
An absolute mass balance determines an absolute mass of an object and includes: a dual diameter wheel including: a balance fulcrum; and a balance beam disposed on the balance fulcrum and including: a main mass arm and a counter mass arm; a main mass receiver that receives the object; a main magnet
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Created May 31, 2018, Updated December 8, 2022
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