Projection Tool

Introduction

This tool can be used to work out two measurements

• The distance along the floor the lens of the projection
• The distance up the slope to the lens of the projection

Download

Download the tool for Macintosh here

Configuration

Be sure to set up all the measurements properly! They are;

• Box lower height - the distance from the floor to the lower base of the box
• Box angle - the sloping angle of the box (use a spirit measure)
• Box width - width dimension
• Box length - length dimension
• Ceiling - the height of the ceiling where the projector is mounted
• Lens distance - the distance of the lens from the ceiling (important!)

Method

Tie a weight to a piece of string and dangle it from the lens / ceiling.