Pompeii in 1996

Figure 4 - Mr. Hanna holds the reflecting tape target, one of the two new survey aids.

Mr. Hanna holds the reflecting tape target, one of the two new survey aids. Note that the right end is out of view, but the change of color of the reflecting tape at the 10 cm. mark is visible near Mr. Hanna's right thumb, as are the second change of color and the end of the tape, 30 cm. from the tip, near Mr. Hanna's left thumb.