Pewter Nocturnal Necklace

Pewter Nocturnal

$39.50

Click to enlarge

Tell time by the stars!

Sundials are fine during daylight, but what about night? Here is an accurate, low-tech (and may we add very green) way to tell time by the stars.

Carefully hand-crafted, the Pewter Nocturnal has a silver-colored finish to the base, center, and arm. It comes on a 30 inch black silk cord.

The Nocturnal or horologium nocturnum was first used in the 15th century by navigators who needed to tell time by the position of the stars. This particular star dial uses the North Star (Polaris) and the Big Dipper to determine the hour.

Read our tutorial on telling time with a horologium nocturnum to see how to use the Nocturnal. This is written in two parts: part I is a worked example, part II is interactive.

The Institute and Museum of the History of Science in Florence, Italy has a very nice introduction to Nocturnal science in English (in Italian).

Written instructions are included.

Dimensions: 1.13 inches (2.8 cm) in diameter.

If you're looking for something really special, take a look at the Sterling Silver Nocturnal.

Made in Canada.

Gift wrap orders: input salutation in the comment section at the end of the ordering process.

Available Options:
Gift wrap:

1055 - Expression #1 of ORDER BY clause is not in GROUP BY clause and contains nonaggregated column 'physics_catalog.o.date_purchased' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

select p.products_id, p.products_image from orders_products opa, orders_products opb, orders o, products p where opa.products_id = '533' and opa.orders_id = opb.orders_id and opb.products_id != '533' and opb.products_id = p.products_id and opb.orders_id = o.orders_id and p.products_status = '1' group by p.products_id order by o.date_purchased desc limit 3

[TEP STOP]