---
title: "SCREEN$ Calibration"
type: "article"
slug: "screen-calibration-2"
url: "http://localhost/article/screen-calibration-2/"
markdown_url: "http://localhost/article/screen-calibration-2.md"
published_at: "2026-03-13T17:42:01+00:00"
modified_at: "2026-03-13T17:42:02+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Tutorial on calculating the ratio between on-screen pixel dimensions and printed image dimensions for accurate screen-dump scaling on large dot-matrix printers. Provides BASIC code to plot a full-screen rectangle and a small inner rectangle, which are then measured and used to derive width and height scaling factors. Demonstrates applying those factors to plan a target…"
category:
  - name: "The Plotter"
    slug: "the-plotter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/the-plotter/"
post_tag:
  - name: "BASIC (programming language)"
    slug: "basic-programming-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/basic-programming-language/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 2068"
    slug: "ts-2068"
    taxonomy: "model"
    url: "http://localhost/model/ts-2068/"
indiv:
  - name: "Dick Wagner"
    slug: "dick-wagner"
    taxonomy: "indiv"
    url: "http://localhost/indiv/dick-wagner/"
publication_r:
  id: 21216
  title: "The Plotter"
  type: "periodical"
  url: "http://localhost/periodical/the-plotter/"
authors_r:
  - name: "Dick Wagner"
    slug: "dick-wagner"
    taxonomy: "indiv"
    url: "http://localhost/indiv/dick-wagner/"
volume: "8"
issue: "2"
issues_articles:
  - id: 39479
    title: "The Plotter v8 n2"
    type: "issue"
    url: "http://localhost/issue/the-plotter-v8-n2/"
pages: "3"
archive_link: false
---

Tutorial on calculating the ratio between on-screen pixel dimensions and printed image dimensions for accurate screen-dump scaling on large dot-matrix printers. Provides BASIC code to plot a full-screen rectangle and a small inner rectangle, which are then measured and used to derive width and height scaling factors. Demonstrates applying those factors to plan a target printed image size.