Point rail arms for R/C servo SG-92R

# Requirement
- R/C Servo SG-92R x 1
- Pinion Gear, Module 0.5, 12T x 1
- Prarail turnout rail x 1

# Introduction

This is a support arm for turnout rail and it is controlled by R/C Servo.
This unit control the direction of turnout rail.