we can set arrow based seekbar using following trick like this : First of all you have to set a image of scale then below that image set a seekbar with progressDrawable transparent and then set arrow image as a thumb.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
   
    <TextView
        android:id="@+id/tvValue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:text="0/100"
        android:textSize="22sp"
        android:textStyle="bold" />


    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="5sp"
        android:orientation="vertical">


        <ImageView
            android:id="@+id/imgScale"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:background="@drawable/scale" />

        <SeekBar
            android:id="@+id/seekBarScale"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginTop="10dp"
            android:max="100"
            android:progressDrawable="@android:color/transparent"
            android:thumb="@drawable/white_arrow_down"
            android:thumbOffset="15dp" />


    </FrameLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10sp"
        android:orientation="horizontal">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:text="@string/poor_txt"
            android:textSize="8sp"
            android:textStyle="bold" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:text="@string/excellent_txt"
            android:textSize="8sp"
            android:textStyle="bold" />
    </RelativeLayout>
</LinearLayout>