REVERSE ENGINEERING
AFTER YOU BOUGHT IT ANY WAY.....

This is a PDF file that discusses how to take a store bought dial and then adjust it so it will work for you. It is an extract from the main book ILLUSTRATING SHADOWS..

This file is about 400k.

You may consider purchasing online
SIMPLE SHADOWS which talks only of horizontal sundials, in a do-it-first-then-fix-it-next step by step process, as well as discussing what
happens and why it works and then stepping you through the process. Tables are provided.

You should download for free these note on reverse engineering a sundial so you know what latitude it was made for and then how to set it in place so it works. Click
HERE TO
DOWNLOAD this easy to read file.
BEFORE YOU BUY.....

go to Mike Shaw's web site and read the Buyer's Guide which has about
  five simple steps to follow BEFORE buying a dial.

  go to
Carl Sabanski's web site and read his guide which has good tips
  to study BEFORE buying a dial.


WHAT NOT TO BUY.....

  download for free these notes on what to look for in web based auctions with
  photos to show the problems with the dials being sold on web based
  auction sites.
The spreadsheet pages have spreadsheets
to help with reverse engineering

Excel for PC            (
illustrating-shadows.xls)
Excel for Palm Pilot (
a0.0 unknown dial.xls)