You can use the time difference scale to set Standard Time as well as Summer Time (Daylight Time).

The base plate of the LUCE sundial with adjusting screws for levelling

The base has a built-in latitude slider that you can use to set the sundial so it's parallel to the Earth's axis.

The LUCE glass sundial is set up with a time difference of 0 to display the solar time.

Using the time difference table provided, the LUCE can also be set to display Standard Time and Summer Time (e.g. CET/CEST).

The LUCE sundial shows 9.30 am.

LUCE Glassonnenuhr

Producer:

HELIOS Sonnenuhren

Design:

Dr.-Ing. Carlo Heller

Display:

Standard Time, Summer (Daylight) Time or Solar Time

Material:

Glass and stainless steel

Dimensions:

D94mm x L189mm x H189mm

Weight:

8 kg

Product:

Equatorial sundial made of glass and stainless steel. Standard Time or Summer (Daylight) Time display (e.g. CET/CEST). Detailed, illustrated manual. Time difference table calculated from the address data. If intended for a different location, please specify in the comments field when ordering.

Price

745,00 € incl. VAT

626,05 € excl. VAT

Delivery time 5 days

Shipping costs included in Germany, EU and Switzerland on any order of 100 Euro or above
Low price shipping outside the EU by registered letter
2 weeks statutory right of return (customised products excluded)
Hotline: +49-611-185 11 06

Description

LUCE - Sunlight as a pointer

The LUCE glass sundial utilises a solid glass cylinder that concentrates the sunlight. A glass helix with a light-scattering inner surface catches the light in the area of the focal line and becomes visible as a line of light. The daily movement of the sun from east to west causes the line of light to rise towards the sky. You can read Central European Time (CET and CEST) or any other standard time on the scale.

The glass cylinder is aligned parallel to the earth's axis and therefore perpendicular to the equator - the characteristic of an equatorial sundial. The great advantage of the upward-rotating glass helix is that it never gets in the way of the sun's rays. This means that it displays the time from sunrise to sunset all year round, even at the equinoxes. This is an advantage over conventional equatorial sundials.

A special feature is that the glass cylinder with glass helix can be rotated and, with the help of a time difference scale, can accurately display Standard time and Summer (Daylight) Time in addition to Solar Time. The time difference is the sum of the local time difference between the customer's own location and the time zone meridian, the equation of time and the summer time difference.

The customer receives a ready-calculated table for their location with the time difference for every day of the year. We determine the location from the address data. If the LUCE is intended for a different location, please specify this in the comments field when ordering.

The sundial can be used worldwide in the latitude range from 0° to 70° north. The latitude is set using a slider in the base. For our customers located in the southern hemisphere, the LUCE is equipped with a time scale with a downward sequence, as the light line runs along the helix from top to bottom in ‘Downunder’.

Read here: A brief history of the development of the LUCE glass sundial

Take a look at the video. It shows how the glass helix with the time scale works, how it is set up and the complex production process:

If your browser does not play the video, watch it on YouTube.

A video by Carlo Heller. Speaker: Richard Martin

The LUCE sundial is patent pending.