{"lien_WSTV":"","tax_name":"deprecated","tax_rate":20,"id_manufacturer":"0","id_supplier":"0","id_category_default":"566","id_shop_default":"1","manufacturer_name":false,"supplier_name":false,"name":"Richard Lange 'Referenzuhr'","description":"<strong>Measure of All Things Time: the RICHARD LANGE \u201cReferenzuhr\u201d<\/strong><div><strong><br \/><\/strong> <em>With its ZERO-RESTART function, an innovative seconds hand resetting mechanism, the limited-edition RICHARD LANGE \u201cReferenzuhr\u201d enriches the line of observation watches dedicated entirely to precise time measurement.<\/em> Just like its famous namesake, the RICHARD LANGE watch family is fully devoted to the scientific facets of horology with a focus on the utmost degree of preci- sion. It has its origins in the understanding that the accuracy of a timepiece reflects the competence of the master. At A. Lange & S\u00f6hne, this insight dates back far into the 19th century. With its resettable sub- sidiary seconds, the RICHARD LANGE \u201cReferenzuhr\u201d continues this tradition. The actuation of a push piece above the crown causes its seconds hand to jump to zero and wait there as long as the push piece is depressed. During that time, a vertical disc clutch assures that the ongoing measurement of time is not interrupted \u2013 the movement keeps running. When the push piece is released, the seconds hand restarts instantaneously.\u00a0\u00a0<\/div><div><br \/><\/div><div>This ZERO-RESTART function is very useful for stopping events of short durations. It is also ideal for synchronising watches and clocks at different locations: the actuation of the push piece synchronises the seconds hand of the instrument with that of a refer- ence clock exactly when its hand passes the 60-seconds mark (\u201czero\u201d). This action \u201cstores\u201d the time of the reference clock and allows it to be transferred to other time-keeping instruments. The RICHARD LANGE \u201cReferenzuhr\u201d pays homage to a strong-hold of time measurement that played in important role in 19th-century Dresden: the timekeeping service of the Mathematics and Physics Salon. As the \u201ckeeper of time\u201d, this scientific institution was responsible for precisely determining the local time and making it available to the city\u2019s population. So in a sense, it was the predecessor of present-day atomic clocks and time signal transmitters. But in those days, the correct time had to be calculated on the basis of astronomical observations. The result was then transferred to a high-precision pendulum clock in the salon. Thereafter, this refer- ence time was saved with especially accurate pocket chronometers and then \u201ccarried\u201d\u00a0to the public clocks. It was also communicated to persons and authorities who needed to know the precise time. Subscribers of the timekeeping service included astronomers and watchmakers as well as officials of the nascent railway system.\u00a0\u00a0<\/div><div><br \/><\/div><div>With its off-centre subsidiary seconds, the dial of the RICHARD LANGE \u201cReferenzuhr\u201d is reminiscent of a historic precursor made in 1811 \u2013 a pocket chronometer known to have been used for synchronisation purposes by the timekeeping service. It was crafted by Johann Heinrich Seyffert who did more to promote precision horology in Dresden than any other watchmaker. His most prominent customer, naturalist and explorer Alexander von Humboldt, purchased one of Seyffert\u2019s chronometers for his now acclaimed Latin American expedition.\u00a0\u00a0<\/div><div><br \/><\/div><div>The RICHARD LANGE \u201cReferenzuhr\u201d features a large balance wheel with eccentric poising weights and a Lange balance spring developed and manufactured in-house. Beating at a frequency of six semi-oscillations per second, it delivers the precision that can be legitimately expected of an instrument designed to serve the sciences. A glance through the sapphire-crystal caseback is a feast for the eyes of those who delight in technical finesse: both the ZERO-RESTART lever mechanism and the winding train are visibly arranged above the three-quarter plate. The strictly limited edition \u2013 50 watches in platinum and 75 in pink gold \u2013 underscores the exclusivity of this coveted collector\u2019s item.<\/div>","description_short":"","quantity":0,"minimal_quantity":"1","available_now":"","available_later":"","price":0,"specificPrice":false,"additional_shipping_cost":"0.00","wholesale_price":"0.000000","on_sale":"0","online_only":"0","unity":"","unit_price":0,"unit_price_ratio":"0.000000","ecotax":"0.000000","reference":"250.025","supplier_reference":"","location":"","width":"0.000000","height":"0.000000","depth":"0.000000","weight":"0.000000","ean13":"","upc":"","link_rewrite":"richard-lange-referenzuhr","meta_description":"Measure of All Things Time: the RICHARD LANGE \u201cReferenzuhr\u201d With its ZERO-RESTART function, an innovative seconds hand resetting mechanism, the limited-editi...","meta_keywords":"","meta_title":"Watch A. Lange & S\u00f6hne Richard Lange 'Referenzuhr' | Richard Lange 250.025 Platinum","quantity_discount":"0","customizable":"0","new":false,"uploadable_files":"0","text_fields":"0","active":"1","redirect_type":"","id_product_redirected":"0","available_for_order":"0","available_date":"0000-00-00","condition":"new","show_price":"1","indexed":"1","visibility":"both","date_add":"2015-08-03 22:47:21","date_upd":"2015-09-30 11:43:34","tags":false,"base_price":"0.000000","id_tax_rules_group":"1","id_color_default":0,"advanced_stock_management":"0","out_of_stock":0,"depends_on_stock":false,"isFullyLoaded":true,"cache_is_pack":"0","cache_has_attachments":"1","is_virtual":"0","id_pack_product_attribute":null,"cache_default_attribute":"0","category":"richard-lange","pack_stock_type":"3","id":802,"id_shop_list":null,"force_id":false,"customization_required":false}
{"Compl\u00e9ment":"Platinum","Statut de vente":"N est plus commercialis\u00e9","Date":"2010","Pi\u00e8ce unique":"No","S\u00e9rie limit\u00e9e":"Oui","Nombre d exemplaire":"50","Sexe":"Homme","Gaucher":"No","Diam\u00e8tre":"40.5","Epaisseur":"11.2","Types":"Hand-winding","Styles":"High Horology, Classical","Calibre_autre":"Lange L033.1","Calibre distinction":"Hand decorated, Hand-engraved","Calibre distinction_autre":"Assembled by hand","Affichage_autre":"Subsidiary seconds blued steel hand, Gold rhodi\u00e9 hands","Complication":"Power Reserve Indicator, Stop second mechanism, Small Seconds","Mati\u00e8re du bo\u00eetier":"Platinum","Particularit\u00e9 du boitier":"Sapphire caseback","Particularit\u00e9 du boitier_autre":"hardness 9, Push-piece at 10 o'clock for resetting the seconds hand","Forme":"Round","Cadran":"Solid silver, Rhodiumed","Index":"Railroad, Arabic numerals, Roman numerals","Verre":"Sapphire","Verre_autre":"hardness 9","Mati\u00e8re du bracelet":"Crocodile leather","Fermeture du bracelet":"Pin buckle","Couleur du bracelet":"Black","Plus de caract\u00e9ristiques":"<div>Small seconds ZERO-RESTART mechanism<\/div><br \/>Movement<br \/>34 jewels<div>276 parts<\/div><div>Precision-adjusted in five positions<\/div><div>Plates and bridges made of untreated German silver<\/div><div>Balance cock engraved by hand<\/div><div>Lever escapement\u00a0Shock-resistant glucydur balance with eccentric poising weights<\/div><div>Superior-quality balance spring manufactured in-house<\/div><div>Frequency :\u00a0<\/div><div>21 600 semi-oscillations per hour<\/div><div>Power reserve : 38 hours<\/div><div>Precision beat adjustment system with lateral setscrew and whiplash spring<br \/><br \/><\/div><div>Hand-stitched crocodile strap<\/div><div>Lange prong buckle in solid platinum<\/div>"}
Richard Lange 'Referenzuhr'
250.025
| Brand : | A. Lange & Söhne |
| Collection : | Richard Lange |
| Model : | Richard Lange 'Referenzuhr' |
| Reference : | 250.025 |
| Nber of pieces : | 50 |
| Complement : | Platinum |
| Year : | 2010 |
| Is not commercialised any more | |
PDF INDEX CARD
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Brand : A. Lange & Söhne Collection : Richard Lange Model : Richard Lange 'Referenzuhr' Reference : 250.025 Nber of pieces : 50 Complement : Platinum Year : 2010 Is not commercialised any more List Price : On request Diameter : 40.5 mm Thickness : 11.2 mm Styles : High Horology Classical Types : Hand-winding Calibre : Lange L033.1 Calibre distinction : Hand decorated Hand-engraved Assembled by hand Complication : Power Reserve Indicator Stop second mechanism Small Seconds Case material : Platinum Case peculiarity : Sapphire caseback hardness 9 Push-piece at 10 o'clock for resetting the seconds hand Shape : Round Dial : Solid silver Rhodiumed Display : Subsidiary seconds blued steel hand Gold rhodié hands Indexes : Railroad Arabic numerals Roman numerals Glass : Sapphire hardness 9 Strap material : Crocodile leather Strap color : Black Strap clasp : Pin buckle + More characteristics : Small seconds ZERO-RESTART mechanism
Movement
34 jewels276 partsPrecision-adjusted in five positionsPlates and bridges made of untreated German silverBalance cock engraved by handLever escapement Shock-resistant glucydur balance with eccentric poising weightsSuperior-quality balance spring manufactured in-houseFrequency :21 600 semi-oscillations per hourPower reserve : 38 hoursPrecision beat adjustment system with lateral setscrew and whiplash springHand-stitched crocodile strapLange prong buckle in solid platinum
DESCRIPTION
- Measure of All Things Time: the RICHARD LANGE “Referenzuhr”
With its ZERO-RESTART function, an innovative seconds hand resetting mechanism, the limited-edition RICHARD LANGE “Referenzuhr” enriches the line of observation watches dedicated entirely to precise time measurement. Just like its famous namesake, the RICHARD LANGE watch family is fully devoted to the scientific facets of horology with a focus on the utmost degree of preci- sion. It has its origins in the understanding that the accuracy of a timepiece reflects the competence of the master. At A. Lange & Söhne, this insight dates back far into the 19th century. With its resettable sub- sidiary seconds, the RICHARD LANGE “Referenzuhr” continues this tradition. The actuation of a push piece above the crown causes its seconds hand to jump to zero and wait there as long as the push piece is depressed. During that time, a vertical disc clutch assures that the ongoing measurement of time is not interrupted – the movement keeps running. When the push piece is released, the seconds hand restarts instantaneously.This ZERO-RESTART function is very useful for stopping events of short durations. It is also ideal for synchronising watches and clocks at different locations: the actuation of the push piece synchronises the seconds hand of the instrument with that of a refer- ence clock exactly when its hand passes the 60-seconds mark (“zero”). This action “stores” the time of the reference clock and allows it to be transferred to other time-keeping instruments. The RICHARD LANGE “Referenzuhr” pays homage to a strong-hold of time measurement that played in important role in 19th-century Dresden: the timekeeping service of the Mathematics and Physics Salon. As the “keeper of time”, this scientific institution was responsible for precisely determining the local time and making it available to the city’s population. So in a sense, it was the predecessor of present-day atomic clocks and time signal transmitters. But in those days, the correct time had to be calculated on the basis of astronomical observations. The result was then transferred to a high-precision pendulum clock in the salon. Thereafter, this refer- ence time was saved with especially accurate pocket chronometers and then “carried” to the public clocks. It was also communicated to persons and authorities who needed to know the precise time. Subscribers of the timekeeping service included astronomers and watchmakers as well as officials of the nascent railway system.With its off-centre subsidiary seconds, the dial of the RICHARD LANGE “Referenzuhr” is reminiscent of a historic precursor made in 1811 – a pocket chronometer known to have been used for synchronisation purposes by the timekeeping service. It was crafted by Johann Heinrich Seyffert who did more to promote precision horology in Dresden than any other watchmaker. His most prominent customer, naturalist and explorer Alexander von Humboldt, purchased one of Seyffert’s chronometers for his now acclaimed Latin American expedition.The RICHARD LANGE “Referenzuhr” features a large balance wheel with eccentric poising weights and a Lange balance spring developed and manufactured in-house. Beating at a frequency of six semi-oscillations per second, it delivers the precision that can be legitimately expected of an instrument designed to serve the sciences. A glance through the sapphire-crystal caseback is a feast for the eyes of those who delight in technical finesse: both the ZERO-RESTART lever mechanism and the winding train are visibly arranged above the three-quarter plate. The strictly limited edition – 50 watches in platinum and 75 in pink gold – underscores the exclusivity of this coveted collector’s item.
- Measure of All Things Time: the RICHARD LANGE “Referenzuhr”
With its ZERO-RESTART function, an innovative seconds hand resetting mechanism, the limited-edition RICHARD LANGE “Referenzuhr” enriches the line of observation watches dedicated entirely to precise time measurement. Just like its famous namesake, the RICHARD LANGE watch family is fully devoted to the scientific facets of horology with a focus on the utmost degree of preci- sion. It has its origins in the understanding that the accuracy of a timepiece reflects the competence of the master. At A. Lange & Söhne, this insight dates back far into the 19th century. With its resettable sub- sidiary seconds, the RICHARD LANGE “Referenzuhr” continues this tradition. The actuation of a push piece above the crown causes its seconds hand to jump to zero and wait there as long as the push piece is depressed. During that time, a vertical disc clutch assures that the ongoing measurement of time is not interrupted – the movement keeps running. When the push piece is released, the seconds hand restarts instantaneously.This ZERO-RESTART function is very useful for stopping events of short durations. It is also ideal for synchronising watches and clocks at different locations: the actuation of the push piece synchronises the seconds hand of the instrument with that of a refer- ence clock exactly when its hand passes the 60-seconds mark (“zero”). This action “stores” the time of the reference clock and allows it to be transferred to other time-keeping instruments. The RICHARD LANGE “Referenzuhr” pays homage to a strong-hold of time measurement that played in important role in 19th-century Dresden: the timekeeping service of the Mathematics and Physics Salon. As the “keeper of time”, this scientific institution was responsible for precisely determining the local time and making it available to the city’s population. So in a sense, it was the predecessor of present-day atomic clocks and time signal transmitters. But in those days, the correct time had to be calculated on the basis of astronomical observations. The result was then transferred to a high-precision pendulum clock in the salon. Thereafter, this refer- ence time was saved with especially accurate pocket chronometers and then “carried” to the public clocks. It was also communicated to persons and authorities who needed to know the precise time. Subscribers of the timekeeping service included astronomers and watchmakers as well as officials of the nascent railway system.With its off-centre subsidiary seconds, the dial of the RICHARD LANGE “Referenzuhr” is reminiscent of a historic precursor made in 1811 – a pocket chronometer known to have been used for synchronisation purposes by the timekeeping service. It was crafted by Johann Heinrich Seyffert who did more to promote precision horology in Dresden than any other watchmaker. His most prominent customer, naturalist and explorer Alexander von Humboldt, purchased one of Seyffert’s chronometers for his now acclaimed Latin American expedition.The RICHARD LANGE “Referenzuhr” features a large balance wheel with eccentric poising weights and a Lange balance spring developed and manufactured in-house. Beating at a frequency of six semi-oscillations per second, it delivers the precision that can be legitimately expected of an instrument designed to serve the sciences. A glance through the sapphire-crystal caseback is a feast for the eyes of those who delight in technical finesse: both the ZERO-RESTART lever mechanism and the winding train are visibly arranged above the three-quarter plate. The strictly limited edition – 50 watches in platinum and 75 in pink gold – underscores the exclusivity of this coveted collector’s item.
-
Brand : A. Lange & Söhne Collection : Richard Lange Model : Richard Lange 'Referenzuhr' Reference : 250.025 Nber of pieces : 50 Complement : Platinum Year : 2010 Is not commercialised any more List Price : On request Diameter : 40.5 mm Thickness : 11.2 mm Styles : High Horology Classical Types : Hand-winding Calibre : Lange L033.1 Calibre distinction : Hand decorated Hand-engraved Assembled by hand Complication : Power Reserve Indicator Stop second mechanism Small Seconds Case material : Platinum Case peculiarity : Sapphire caseback hardness 9 Push-piece at 10 o'clock for resetting the seconds hand Shape : Round Dial : Solid silver Rhodiumed Display : Subsidiary seconds blued steel hand Gold rhodié hands Indexes : Railroad Arabic numerals Roman numerals Glass : Sapphire hardness 9 Strap material : Crocodile leather Strap color : Black Strap clasp : Pin buckle More characteristics : Small seconds ZERO-RESTART mechanism
Movement
34 jewels276 partsPrecision-adjusted in five positionsPlates and bridges made of untreated German silverBalance cock engraved by handLever escapement Shock-resistant glucydur balance with eccentric poising weightsSuperior-quality balance spring manufactured in-houseFrequency :21 600 semi-oscillations per hourPower reserve : 38 hoursPrecision beat adjustment system with lateral setscrew and whiplash springHand-stitched crocodile strapLange prong buckle in solid platinum