---
product_id: 218466996
title: "CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail"
brand: "calt"
price: "R3322"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Calt"
url: https://www.desertcart.co.za/products/218466996-calt-ghw38-300mm-roller-rubber-wheel-length-position-meter-measuring
store_origin: ZA
region: South Africa
---

# 1000 pulses per revolution (PPR) 300mm precision roller wheel Steel mounting spring bracket CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail

**Brand:** calt
**Price:** R3322
**Availability:** ✅ In Stock

## Summary

> 📐 Measure Like a Pro, Every Millimeter Counts!

## Quick Answers

- **What is this?** CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail by calt
- **How much does it cost?** R3322 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/218466996-calt-ghw38-300mm-roller-rubber-wheel-length-position-meter-measuring)

## Best For

- calt enthusiasts

## Why This Product

- Trusted calt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust 300mm Rubber Roller:** Durable, slip-resistant wheel designed for consistent length and distance tracking.
- • **Versatile Voltage Compatibility:** Operates seamlessly between 5-26V, fitting diverse industrial setups.
- • **Heavy-Duty Steel Mounting Bracket:** Spring-loaded bracket offers secure, adjustable installation on lift rails and walls.
- • **Pinpoint Accuracy in Every Rotation:** 1000PPR ensures ultra-fine measurement resolution for professional-grade projects.
- • **Push-Pull Output for Reliable Signal:** Stable pulse output guarantees flawless integration with Arduino, Raspberry Pi, and more.

## Overview

The CALT GHW38 is a high-precision rotary encoder featuring a 300mm rubber roller and 1000 pulses per revolution output. Designed for length and distance measurement, it supports a wide voltage range (5-26V) and delivers push-pull signals for reliable interfacing with popular microcontrollers. Its steel spring mounting bracket ensures stable, adjustable installation, making it a trusted tool for industrial and scientific applications.

## Description

CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail: desertcart.com: Industrial & Scientific

Review: Works well - Worked well, first try, looks good, though the threads on the screws connecting the encoder to the swivel arm, are small and easy to strip the threads… which I think happened so I may be holding the encoder on the arm with only two screws… It means that the encoders housing is not hard anodized
Review: Good encoder, easy to assemble and adjust - Works well. Used with Arduino , raspberry pi and Nvidia jetson. Suggest to solder the wire leads when making a connection to your module pins. I have purchased two and am using them in a project.

## Features

- Including: 1pc encoder, 1pc bracket, 1pc 300mm perimeter wheel and screws
- Power supply 5-26V, Push pull output, 1000PPR
- Mini measuring unit 1mm
- The output waveform is proportional to the unit of international measurement type(Meter or inch)
- Widely used in length or distance measurement

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07H28H5FY |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #112,531 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Switch Encoders |
| Customer Reviews | 4.8 4.8 out of 5 stars (30) |
| Date First Available | April 14, 2016 |
| Finish | Unfinished |
| Included Components | Not to fill |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.6 pounds |
| Item model number | 1000PPR300mm |
| Manufacturer | CALT |
| Mounting Type | Wall Mount |
| Part Number | GHW38 |
| Product Dimensions | 1.38 x 1.5 x 1.5 inches |
| Size | Push-Pull output(P) |
| UPC | 781573936483 |

## Product Details

- **Brand:** CALT
- **Color:** picture color
- **Finish Type:** Unfinished
- **Item dimensions L x W x H:** 1.38 x 1.5 x 1.5 inches
- **Material:** Aluminum

## Images

![CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail - Image 1](https://m.media-amazon.com/images/I/4139mJRRawL.jpg)
![CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail - Image 2](https://m.media-amazon.com/images/I/41B8+K257CL.jpg)
![CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail - Image 3](https://m.media-amazon.com/images/I/41Mv9cCC2NL.jpg)
![CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail - Image 4](https://m.media-amazon.com/images/I/41aYawsK6DL.jpg)
![CALT GHW38 300mm Roller Rubber Wheel Length Position Meter Measuring Pulse Rotary Encoder 1000PPR Push-Pull Output Steel Mounting Spring Bracket for Lift Rail - Image 5](https://m.media-amazon.com/images/I/41el6GLy0rL.jpg)

## Available Options

This product comes in different **Size, Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by W***E on December 9, 2025*

Worked well, first try, looks good, though the threads on the screws connecting the encoder to the swivel arm, are small and easy to strip the threads… which I think happened so I may be holding the encoder on the arm with only two screws… It means that the encoders housing is not hard anodized

### ⭐⭐⭐⭐⭐ Good encoder, easy to assemble and adjust
*by R***R on June 14, 2025*

Works well. Used with Arduino , raspberry pi and Nvidia jetson. Suggest to solder the wire leads when making a connection to your module pins. I have purchased two and am using them in a project.

### ⭐⭐⭐⭐ Great encoder
*by J***R on December 16, 2020*

Great product used as part of an encoder for position and rotation on a four wheeled Omni robot.

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-09*