What are all the hand signs of the line judge? What's the sign for deep?

Question

I know that the umpire will call let, but is there a hand sign that the line judge can use for let? Or for deep?

For wide, I know that they just point with their hand to the side it was wide on, in that respect.

Answer 1

The side line judges, call out in addition to the hand to the side to indicate wide(as you indicate). The baseline judge
also does the same by calling it out and indicating the same
way as the line judge.

If the ball is in, the judges show both the hands together
between their legs around the knee area to indicate that the
ball is in.

It is possible, when the ball is played close to the base line
and side line, one calling in good and the other calling it out.
But depending on where the ball lands, that judge calls it out.
Hence only one line/side judge can calls it and the main ref
hears only one call. Of course, if they have made an error
the main ref can overrule any side/line judge call.

Answer 2

Line judges are responsible for calling the ball good,or out on their assigned line.
They hold the hands together to indicate good.
They extend the arm,and call "OUT" to indicate out.

In professional tournaments,there is a sensor on the net to tell if a serve has struck it.The chair umpire then says "LET".
Net judges were,and are still used to call lets.
They sit at the net and call if it has been struck.It's easier, and safer to use a sensor.Sometimes the net man would get hit by a ball during a rally.

Answer 3

Tennis Hand Signals