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Table 3 Weight measurement precision evaluated by different indicators based on absolute (mean and standard deviation – SD), root mean square (RMS) and maximum (max.) errors.

From: An instrumented cylinder measuring pinch force and orientation

Theoretical

Mass tested (g)

100

200

300

400

500

Weight (N)

0.981

1.961

2.942

3.922

4.903

Empirical Weights

Mean (N)

0.991

1.982

2.968

3.948

4.924

SD (N)

0.014

0.015

0.025

0.030

0.031

Mean Error (N)

0.014

0.022

0.032

0.034

0.029

SD Error (N)

0.009

0.013

0.017

0.021

0.025

RMS Error (N)

0.017

0.026

0.036

0.039

0.038

Max Error (N)

0.035

0.057

0.088

0.082

0.165