Hi Chris, > Instead of a truly horizontal dial, you could > use any polar sundial, inclined by just one degree from the horizontal.
That's interesting. I just printed out a polar Sundial from ShadowsPro and it looked very similar to the horizontal sundial for my location. > I was in Singapore last year and admired the sundials in the Botanical > Gardens. But I noticed that the armillary sphere dial in the orchid garden > was set exactly horizontal, not at one degree. This is a mistake. I'll need to have a look at this when I next go there. All these while I thought that the Sundials over here were just garden ornaments and didn't really work. I'll also need to revisit the sundials at the Singapore Science Centre to have a closer look to see if it really works. They may have one or two large ones over there in the gardens. I recall that one of them is U shaped with a rod in the centre. > You ask about the hole in the gnomon of a universal ring dial. I'll take note about the am/pm orientation. I think I read in another msg an equation to position the holes using tan. So I'm off to find out about the angle of the Sun. rgds weemeng -
