H. van Laun achromatic brass pocket telescope.
Stock Number: 380302 d
P.O.A.
Dimensions
length closed 7cm, open: 9cm , diam: 1,9cm
Circa
Late 18th C
Country of manufacture
Other
Description
Very Rare Dutch brass pocket optical instrument in his cylindric original red leather box. late 18th century signed by “H.v.Laun fecit Amsterd.” (Hartog van Laun)Here a really interesting discovery of this unusual optical instrument signed:
“H.v.Laun fecit Amsterd.”
It seems to be a small achromatic brass pocket telescope with three objectives lenses (one missing and one chipped) and one eyepiece lens, fitted in a small laquered brass tube with telescopic sliding moving focusing.
(see all detailed photos)
The three objectives lenses are screwed one in one to obtain a different magnifications, with two brass diaphragms black painted.
We can obtain magnifications from this instrument even if one lens is missing.
Size : length closed 7cm, open: 9cm , diam: 1,9cm
box: lenght 11cm, diam 2,6cm
In according to Hans Hooijmaijers who done a history work on this maker, could be dated this signature before the 1792 (see the tab2. below)
We know very few instruments by H.v.Laun in Dutch museums.
There is a collection of 8 instruments made from Laun family in the Boerhaave museum in Leiden (see the tab1. below)
There is one illustrated op page 147 in the book “A Certain Instrument for seeimng far by
P.J.K. Louwman / H.J. Zuidervaart
“Hartog van Laun”
Dutch instruments maker mainly famous for designed a table-planetarium with which the movement of the sun, earth, moon and planets could be demonstrated. He used the instrument in his lectures, but he garnered only really luck when the Amsterdam professor Jan Hendrik van Swinden Felix Meritis in 1802 explained in details and published it.
The complete informations on this dutch maker and the complete list of the instruments, we can found on the good work written by Hans Hooijmaijers, you can found the pdf file from this links:
https://www.gewina-studium.nl/articles/10.18352/studium.1485/galley/1514/download/
http://www.gewina-studium.nl/articles/abstract/10.18352/studium.1485/
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Dealer information
Van Leest Antiques
Van Leest Antiques
Van Leest Antiques, based in Utrecht in the Netherlands, specialises in antique scientific and medical instruments. Their collection covers mainly scientific and medical antique instruments: barometers, globes and planataria, nautical instruments, anatomical models, and pharmacy items. Toon Van Leest travels regularly in Europe and visits trade fairs, auctions, and antique dealers to collect stock and to find pieces to fulfil his clients' unusual requests.
As well as being an avid antique collector and dealer, Toon Van Leest is also a dentist. He believes that antiques are a stable investment, not reliant on trends or fashion, and have truly lasting value. Above all, he says, antiques are timeless and never lose their beauty.
