All 5 Uses

indicate
in
To Kill a Mockingbird
(Edited)

The internal arrangements of the Finch house were indicative of Simon's guilelessness and the absolute trust with which he regarded his offspring.
p. 91.6

indicative = a demonstration
From the other side, however, Greek revival columns clashed with a big nineteenth-century clock tower housing a rusty unreliable instrument, a view indicating a people determined to preserve every physical scrap of the past.
p. 185.1

indicating = showing (or demonstrating)
We don't know, but there is circumstantial evidence to indicate that Mayella Ewell was beaten savagely by someone who led almost exclusively with his left.
p. 232.1 *

indicate = suggest (possibly show)
"Is he all right?" Aunty asked, indicating Jem.
p. 243.1

indicating = looking or nodding toward; or pointing to
His hand tightened on mine and he indicated that he wanted to leave.
p. 319.7

indicated = suggested

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)