Spot-on Sundials in Brass

The Spot-On Polar Sundial

An unusual sundial echoing the 3 Millennium sundials designed for the Tylers and Brickayers company of the City of London. One of these is near the Millennium footbridge in Central London.

This handsome modern sundial is made to our design in India. It is of solid brass, and weighs 5.25 kg. It is 31.5 cm. wide, 14 cm. overall depth, and 13 cm. overall height. (This is equivalent to 11½lb, and 12.4 ins. width by 5.5 ins. depth by 5.1 ins. overall height). You can click on the pictures below to see a full-size image.

The fixings are concealed to avoid pilferage. The baseplate (see picture) is first screwed down to a suitable plinth, and the sundial is then attached to the baseplate using the special recessed screws actuated with a spcial tool supplied with every sundial.

The gnomon (which casts the shadow) is the "oxhead" in the centre of the dial. At 6 am, the shadow from the top of the gnomon just skims the top of the left hand "ear". By 6.45 the shadow has traversed the ear, and arrived on the main dialplate. It slowly moves across the dial. At noon, the sun is directly overhead, and the shadow is immediately below the gnomon in the centre of the dialplate.

The gnomon is is made from two brass plates with a narrow airgap. At solar noon, when the sun is directly overhe ad, a line of light shines through the airgap for a few minutes only. This enables the sundial to be set absolutely accurately to true north, knowing only the time of solar noon at your exact location (see our sister website at

The sundial is priced at £325 including UK mainland delivery. Please enquire for other destinations. The price includes up to 5 lines of inscription (up to 60 characters per line) on the backplate, which measures 30 cm. wide by 8 cm. high. (see examples)

The polar dial is supplied with a baseplate (shown in the photo below) which adjusts the angle of the gnonom for different latitudes as shown in the table. Use the links For an approximate indication of the latitudes in Europe or North America.

Model Gnomon angle & baseplate angle

Suitable for latitudes

Polar48 48° N (0°) 46° to 49° N (note A)
Polar50 50° N (2°) 49° to 51° N
Polar52 52° N (4°) 51° to 53° N
Polar54 54° N(6°) 53° to 55° N (note B)

Notes: A - Can be used south of 46° N with adjustments B - Can be used north of 56° with adnustments


base plateThe Spot-On Polar Sundial was first shown in public in the Sundial Garden at the Royal Show at Stoneleigh near Coventry from 1st to 4th July 2002.


31.5 W x 14 D x 13 cm. high.
12.4 W x 5.5 D x 5.1 ins. high

Weight: 11½lb. (5.25 kg)

£325 delivered mainland UK
Engraving included


If you would like further details about the sundial or its availability, please send us an Email at or use the enquiry form below

If you would like to discuss with us the possibility of having one of these beautiful Spot-On Polar Sundials, please fill in the form below, and we will get in touch with you to discuss all the details with you. Thank you for your interest!

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Approximate location of the proposed site of the sundial

Spot-On Sundials is the trade mark for sundials designed by Piers Nicholson andincorporating the unique "line of light" which enables them to be set up (and therefore read) to great accuracy. Spot-On Sundials are also available in stainless steel.