Dexterity Card
Every hand we ship, measured on one protocol, from October 2026.
v0.1 · Draft for comment Comment on the draft
Dexterity Card
Template · Protocol v0.1 (draft)
Example image
- Brand / model
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- Card type
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- Serial number
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- Measured on
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- RCSN
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- Protocol version
- v0.1 (draft)
- Fingertip repeatability—mm
- Command-to-motion latency—ms
- Per-joint backlash (max)—deg
- Max grip force—N
- Drift after 500 grasps—mm
- Thermal derating, 10 min—% of cold
What we measure
Fingertip repeatability mm
Does it land in the same place?
Same command, repeated; track fingertip markers.
Spatial Precision Method
Command-to-motion latency ms
How fast it reacts.
Step command; high-speed camera frame of first motion.
Temporal Precision Method
Per-joint backlash deg
Slack on direction reversal.
Reverse each joint; measure dead motion.
Spatial Precision Contact Precision Method
Max grip force + curve N
How hard, and how linear.
Sweep closure on a force gauge.
Contact Precision Grasp Diversity (partial) Method
Drift after 500 grasps mm
Does it hold position over a session?
Repeatability before vs. after 500 cycles.
Spatial Precisionover a session Method
Thermal derating % of cold
Force lost when hot.
Grip force after 10 min full load vs. cold.
Contact Precisionover time Method
Draft for comment. Full procedures in the protocol (v0.1).
Mapped to DexBench's five dexterity regimes. DexBench is published by RLWRLD, with NVIDIA listed as a platform partner; Robotics Center is not affiliated with either.
One card for the life of the hand
- IntakeMeasured before it ships to you.
- Before repairThe quote is based on what's actually off.
- After repairProof the fix worked.
- ResaleThe buyer gets the full history. A Carfax for robot hands.
Bound to the unit's serial number. Vendors see their numbers before publication.
Why one protocol
Every vendor measures its own way, so datasheets can't be compared. We have many brands on one bench, and we publish measurements. We never rank hands.
Get a card
Included with every hand bought through RC from October 2026. Already own one? Ship it to us and we run the same protocol.