---
title: Selecting the custom scale/method on a series 5 J57 refractometer.
description: Step-by-step instructions for selecting the custom scale/method on a series 5 J57 refractometer.
---

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# Selecting the custom scale/method on a series 5 J57 refractometer.

## Step-by-step instructions for selecting the custom scale/method.

1. Select Menu
2. Enter passcode 123 then enter
3. Select Scale
4. Select Custom
5. Select Exit
6. Select Home
7. Test your sample to confirm results

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