The advantage of aiding mechanisms in measurements with callipers

2014 Joint IMEKO TC1-TC7-TC13 Symposium: Measurement Science Behind Safety and Security

Correia, Emanuel Paquete^1 ; Sousa, João A^2

LREC Edifício LREC, Rua de S. Gonçalo, Azores, Ponta Delgada

9500-343, Portugal^1

LREC, Rua Agostinho Pereira de Oliveira, Funchal

9000-264, Portugal^2

关键词: Accurate measurement;    Aiding mechanisms;    Force application;    Movable jaws;    Positioning error;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/588/1/012005/pdf
DOI  :  10.1088/1742-6596/588/1/012005

来源: IOP

【 摘 要 】

Making accurate measurements with a calliper is far from a trivial task. It requires control of the positioning and force application during measurement, which can only be achieved by experienced users. Research has been made in order to help the inexperienced user to make accurate measurements and minimize the training that is normally required. The developed techniques consist on the application of a structure to support the calliper, thus minimizing positioning errors, and a force control accessory for the calliper's movable jaw, resulting in an estimated operator's uncertainty of about 40% of the calliper's resolution value.