Illustration for At What Tilt Does a Hung Frame Read as Crooked?: A Method-of-Constant-Stimuli Threshold Study of 312 Observers, and the Levelling Tolerance Adopted From It

At What Tilt Does a Hung Frame Read as Crooked?

A Method-of-Constant-Stimuli Threshold Study of 312 Observers, and the Levelling Tolerance Adopted From It

A research poster from the School of Continuous Improvement shows 312 observers the same framed print at eleven tilt levels across four frame widths, fitting a psychometric function per observer to locate the point at which a hung frame reads as crooked. The median 75 per cent detection threshold is 0.74 degrees at 600 millimetre frame width and falls to 0.60 degrees at 900 millimetres, leaving every width band above the 0.40 degree levelling tolerance that the estate's revised hanging schedule now requires each framed work to be attested against quarterly.

AuthorsCasimir Beng, Torun Ezeigwe, Marit Osayande
SchoolSchool of Continuous Improvement
Output typeResearch poster
FundingIndicator Stewardship Seed Fund: Succession Planning for the Lab's Reference Calibration Weights ($47,285)Indicator Stewardship Seed Fund: Keeping the Laundromat's Available-Machine Board Honest After the Regulars Stop Reporting ($158,439)
Published
DOI10.5555/slop.qz0v94
Pages1
Cited by2 outputs
Version1.0
LicenceCC BY 4.0

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@misc{slop_qz0v94,
  author       = {Casimir Beng and Torun Ezeigwe and Marit Osayande},
  title        = {At What Tilt Does a Hung Frame Read as Crooked?: A Method-of-Constant-Stimuli Threshold Study of 312 Observers, and the Levelling Tolerance Adopted From It},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.qz0v94},
  url          = {https://slop.university/outputs/slop-poster-nobody-hangs-a-qz0v94/},
  version      = {1.0},
  note         = {Research poster},
}