POSITION SCALE 1 INCH = 15 CENTIMETERS
» C + Bb + &t * ® * + vtt +
vg uk tie Wo uui tue v + + ++ +
> ts d OF +) hy Cie ne og
* + +
a uo + + |
* ^to» VR d Y X i ^ 4
fb 1 MILLIMETER
Figure 10. Error Vectors in A Displacement-Free Test
No. of (1) (2) (1) (2) (3) (4)
Experiment Check Points d. Oy d, o, dr o.
1 26 „044 J. ow . 66 .05 A3
2 . 38 .040 .068 .006 .057 .04 .09
3 47 .034 .076 -.028 .062 .04 „10
4 18 „007 ‚063 -.028 .058 .03 .09
Mean .03 .08 -.009 .06 .04 .10
(1) d, dy means of x and y components of error vectors
(2) Ok» Oy Std. deviation of x and y components of error vectors
= 2 2,4
(3) d, = (d. * d, )
- 2 2,4
(4) =, = (e^ tef)
Table 1. Error Vectors Computed From Four Experiments
20