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The Spot-on Sundial - a new concept in sundials

 

Baseplate dimensions for stainless steel sundials

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Product Overall dimensions
Engraving area
cm.    Matt circle dia.    (ins. approx)
Weight
kg (lb. approx)
Fixing PCD (cm)
55 cm. Stainless
(model SK)
O:- 55 x 55 x 25H
E:- 55 x 12.5
M: - 42
O:- 22 x 22 x 10 H
E:- 22 x 5
M:- 16½
20½ (45)

600
42 cm Stainless
(model SL)
O:- 42 x 42 x 21.5H
E:- 42 x 9
M: - 32
O:- 16½ x 16½ x 816½ H
E:- 16½ x 3½
M:- 12½
12 (28)

440
30 cm. Stainless
(model SM)
O:- 30 x 30 x 15H
E:- 30 x 5.5
M: - 23
O:- 11¾ x 11¾ x 6H
E:- 11¾ x 2
M:- 9
9 (20)

200
24 cm. Stainless
(Model SQ)
O:- 24 x 24 x 14H
E:- 24 x 4.5
M: - 18
O:- 9½ x ½ x 5½H
E:- 9½ x 1¾
M:- 7
7 (15)

The drawing below shows the 42 cm. Spot-On Sundial (which measures 41.8 cm. square), and has a 65 x 9 mm slot located on its centre line 68 mm. from the top edge. The tenon of the gnomon passes through this slot, and the gnomon is secured two bolts passing through a 75 x 20 mm securing plate, which enables the bolts to be tightened to keep the gnomon accurately in position. A 75 x 20 recess approx 10 mm. deep is required in the plinth to accomodate the securing plate and bolts.

If an additional physical fixing is required, there is a central M6 blind hole approx 8 mm. deep into which an M6 rod (not supplied) of any required lengh can be fitted and secured through the top part of the plinth.

Click on the link for a larger image of the underside of the 42 cm. dialplate or of the 30 cm. dialplate.

Note: production dials are sqaure, notrectangular as in these images

 
Spot-On Sundials, Hampstead, London, England
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