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Table 2 Partners and instruments used

From: Round robin comparison study on the form measurement of optical freeform surfaces

PartnerTwo-radiiConvex toroidConcave toroid
IPPMFUMFUMFU
MahrMFU, TWIMFU, TWIMFU, TWI
USTUTTTWITWI
PTBTWITWI
NMIJUA3P
  1. TWI: Tilted-Wave Interferometer (product name: TWI-60), MFU: coordinate measuring machine (CMM) with optical point sensor (product name MarForm MFU 200 Aspheric 3D), UA3P: CMM with tactile probe (product name UA3P-4000)