Hello All,
A sundial with Italian hour lines labeled in countdown fashion shows hours remaining until sunset. Although presently rare, these dials are very intriguing and deserve to be better known. An interesting feature is that such a dial needs no correcting for longitude, equation of time, or daylight savings. Recently we made and installed a vertical "hours to sunset" sundial at a small grass airstrip in Vermont, USA, and it has been very well received. Other likely sites would be boat marinas, ski areas, schools, etc. To help others who might wish to design and build a vertical hours to sunset sundial, I've written a design manual, complete with many worked examples and including all necessary tables. These dials must be computed for a particular latitude and declination. Although it is very useful to have Fer de Vries' program suite, ZONWVLAK, a patient dialist can design an Italian hours sundial using a basic scientific calculator. The manual is designed to be sent in four pieces via regular email. Should you wish to receive this manual (at no charge), contact me directly by email. Nothing will be sent unless you specifically request it. I'm not able to offer printed copies at this time. Best, Mac Oglesby <[EMAIL PROTECTED]>
