Visual estimation of lengths and angles: how accurate are we?

Affiliations

• ¹ Department of Hand and Reconstructive Microsurgery, National University Hospital, Singapore.
• ² Department of Hand and Reconstructive Microsurgery, National University Hospital; Department of Orthopaedic Surgery, Ng Teng Fong General Hospital, National University Health System, Singapore.
• ³ Raffles Orthopaedic Centre, Raffles Medical Hospital, Singapore.
• ⁴ Department of Hand and Reconstructive Microsurgery, National University Hospital; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.