# needle-base-tip-min-max-u87vi-wzsrt-kjyu > 2025-03-13 11:12pm
https://universe.roboflow.com/rf-100-vl/needle-base-tip-min-max-u87vi-wzsrt-kjyu

Provided by a Roboflow user
License: MIT

# Overview
- [Introduction](#introduction)
- [Object Classes](#object-classes)
  - [Center](#center)
  - [Max](#max)
  - [Meter](#meter)
  - [Min](#min)
  - [Pointer Tip](#pointer-tip)

# Introduction
This dataset is designed for detecting various components of analog meters. It includes five classes: center, max, meter, min, and pointer_tip. Each class represents a distinct part of the meter, essential for measurements and gauge readings.

# Object Classes

## Center
### Description
The center is the pivot point around which the needle rotates. It is typically located at the center of the gauge face.

### Instructions
Annotate the central pivot area of the meter. It is usually circular and located in the middle of the gauge face. Do not include any surrounding hardware or additional meter elements outside of the central pivot.

## Max
### Description
The max class represents the maximum value marker on the meter's scale, often found at the far end of the gauge.

### Instructions
Identify and label the topmost marker on the scale, indicating the highest value measurable by the meter. This area is usually at the end of the measurement arc. Avoid including any numbers or labels present on the scale.

## Meter
### Description
The meter class comprises the entire gauge, including the face, scale, and surroundings.

### Instructions
Draw a bounding box around the whole gauge, capturing the glass, face, and casing. Ensure that the edges are tight against the outermost part of the meter.

## Min
### Description
The min class depicts the minimum value marker on the meter's scale, typically at the opposite end of the max marker.

### Instructions
Locate the bottommost marker on the scale, indicating the lowest value of the meter. This marker is generally found at the beginning of the measurement arc. Do not include any surrounding labels or numbers.

## Pointer Tip
### Description
The pointer tip is the end part of the needle, indicating the current measurement on the scale.

### Instructions
Tag the end of the needle that points to the scale. Focus solely on the tip of the pointing needle without covering the base or middle sections. Ensure the annotation is strictly on the tip to prevent overlap with other gauge components.