Both Uses

indicate
in
The Phantom of the Opera
(Auto-generated)

To any one understanding the architecture of the edifice, the Persian's action would seem to indicate that Erik's mysterious house had been built in the double case, formed of a thick wall constructed as an embankment or dam, then of a brick wall, a tremendous layer of cement and another wall several yards in thickness.†
Chpt 20

indicate = show
Here the Persian motioned to Raoul to go on his knees; and, in this way, crawling on both knees and one hand—for the other hand was held in the position indicated—they reached the end wall.†
Chpt 20 *

indicated = showed

Definitions:

(1) (indicate)
to show (point out, demonstrate, express, or suggest)

The form, indicator can refer to many different kinds of things including intentional signals (such as a turn indicator), gauges (such as one that indicates pressure), or a measurement (such as an economic or chemical indicator).
(2) (meaning too rare to warrant focus)