Sundial Key Chain – Brass Pocket Sundial Key Chain For Sale
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Sundial Key Chain – Brass Pocket Sundial Key Chain:
$8.59
SundialKey Chain – Brass Pocket Sundial KeyChain
Solid Brass, Antique Reproduction & very detailed
Size:4.5cmX 0.5cm
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Check out myother items!Instructions for Using Simple Pocket SundialAny sundial of this type requires the following:1) A steady horizontal base on which to stand it.2) Conditions when the sun is shining directly onto it - a bright day with hazysunshine i.e. sun shining through cloud - will not work.3) A knowledge of your latitude (you can get this from a map of your area, butdon\'t worry about this too much, the nearest degree will do.Then:-4) Having found your latitude you will now need to adjust the gnomon (thehinged \"needle\") so that this (latitude) value corresponds to the angle betweenit and the brass base. The easiest way to do this is to use a schoolboyprotractor to make a cardboard template having this angle.5)Set the sundial so that it is orientated with the \"12\" marking (near the\"knob\") pointing due north.6) The shadow of the gnomon will indicate the time on the dial or chapter ring.For such a tiny instrument you will find that it gives surprisingly goodresults N.B. It will always show GMT and will therefore appear to be one hourslow during the summer months when the clocks are put forward.One last point: the brass base is quite reflective - don\'t confuse thereflection of the gnomon with its shadow!so good, i bought 3 moreBuyer:arnellave(307)26-Mar-12 19:01Sundial Key Chain – Brass Pocket Sundial Key Chain (#250875036120)£6.99View Item
