Het Oog Magnifier Magnifyi 30 x 21mm van Loupe van de Juwelier van Slive

Het Oog Magnifier Magnifyi 30 x 21mm van Loupe van de Juwelier van SliveGlass het Oog Magnifier Magnifyi 30 x 21mm van Loupe van de juwelierMini juwelier Loupe 30 x 21mm het Vergrootglas Magnifier van het Oog met product CaseGreat voor de horlogemakerijindustrie, speciaal voor het inspecteren van die uiterst kleine objectsGood voor juwelen, muntstukken, zegels en antiquiteiten enz. Vouwbaar en uiterst klein, groot om in uw zak te hebben colorLen al timeSilver binnen diameter: 21mmInspect het voorwerp bij 30 keer powerSize: mmPackage 38 x 26 x 18 included1 X 30*21MMJuwelier Loupe met beschermend geval

nu kopen

Het Oog Magnifier Magnifyi 10 x 18mm van Loupe van de Juwelier van Slive

Beschrijving:　1.Great product voor de horlogemakerijindustrie, speciaal voor het inspecteren van de uiterst kleine voorwerpen

2.Great voor juwelen, muntstukken, zegels en antiquiteiten enz.

3.Tiny, groot om in uw zak

4.Color de hele tijd te hebben: Slive

5.Size: 10 x 18 mm

nu kopen

Het gouden Oog Magnifier Magnifyi 30 x 21mm van Loupe van de Juwelier

Het gouden Oog Magnifier Magnifyi 30 x 21mm van Loupe van de Juwelier








Beschrijving:　





1.Great product voor de horlogemakerijindustrie, speciaal voor het inspecteren van de uiterst kleine voorwerpen





2.Great voor juwelen, muntstukken, zegels en antiquiteiten enz.





3.Tiny, groot om in uw zak





4.Color de hele tijd te hebben: gouden diameter





5.Len: 21mm voorwerp





6.Inspect bij 30 keer macht





7.Size: 38 omvatte x 26 x 18 mmPakket: 1 de Juwelier Loupe van X 30*21MM met beschermend geval

nu kopen

Het Oog Magnifier Magnifyi 20 x 21mm van Loupe van de Juwelier van Slive

Het Oog Magnifier Magnifyi 20 x 21mm van Loupe van de Juwelier van Slive Slive het Oog Magnifier Magnifyi 20 x 21mm van Loupe van de juwelier
1.Great product voor de horlogemakerijindustrie, speciaal voor het inspecteren van de uiterst kleine voorwerpen

2.Great voor juwelen, muntstukken, zegels en antiquiteiten enz.

3.Tiny, groot om in uw zak

4.Color de hele tijd te hebben: Slive

5. 20 x 21mm

nu kopen

How to Use Jewelers Loupe

How to Use Jewelers Loupe

A jeweler's loupe is a specialized magnifying glass used to inspect jewelry. Because magnification and clarity are essential to a good jeweler's loupe, choose a 10x triplet lens loupe to view jewelry and gems. Beginners using loupes shouldn't expect to become experts but should expect to be able to spot basic flaws in gems and jewelry pieces

Purchase a jeweler's loupe. The standard loupes for most gemologists have about 20mm lenses (may vary between 18mm to 25mm) in 10 magnification times increase. You also want one that has been corrected for aplanatic and achromatic aberrations to avoid seeing fuzzy or out of focus images.

Step 2 Establish your seeing eye. Hold one finger up and place it about 2 feet before you. Notice what is behind the finger when you look beyond the finger with both eyes. It might be best to look at an object and then look at your finger. Now close one eye at a time while looking at your finger. The eye that places your finger in the same place in relation to the background is your seeing eye.

Step 3Find a place with as much light as possible. Obviously you are going to need as much light as you can find. Sunlight is the safest bet since florescent and regular light bulbs lack some colors needed. Professionals use light sources such as diamond lamps but in your home, a good desk lamp should do the trick.

Step 4Place a clean towel on the surface you plan to use. If you are holding a gem such as a diamond and it drops, you want to give it a soft landing spot. This helps to prevent the gem from rolling away if it should drop.

Step 5Open the loupe until the loupe is straight. This position is the most comfortable one for loupe use.

Step 6Pick up the loupe with the hand on the same side as your seeing eye.

Step 7Grasp the loupe between your thumb and middle finger. Place your index finger through the open slot at the bottom of the loupe if it fits there.

Step 8Place the loupe in front of your eye. Hold it about 1 or 2 inches away from your eye. If the object is too far away from your eye, the item will appear upside down so move the loupe closer to your eye.

Step 9 Steady the loupe in your hand by resting one of your fingers on your cheek.
Step 10Position the item holding the object so you can steady it by placing it against the other hand.

About Jeweler's Loupe

About Jeweler's Loupe


Perhaps the most important tool in gemology is that of the jewelers loupe...pronounced "LOOP". This most important piece of equipment...in the right hands...can serve as the foremost identification and grading tool.
There are two important factors about making the decision regarding which loupe is right for you. The first is the size of the lens. Most good quality loupes will have an 18mm lens in 10x or 10 power. This is the standard for most gemologists...however, larger and smaller size lenses are available. And loupes in the 20x or 30x are available....but not worth much because the lenses have to be so small at the higher magnification that they are not much use. So a 10 x 18mm loupe is the first consideration.

Jewelers Loupe, tips on choosing the one you need.

i have sell Jewelers loupes on ebay(www.ebay.com). Hopefully this guide will help you to know the truth about the loupes offered through out ebay(www.ebay.com).
Loupes are generally listed by the strength of magnification or power first, ie: 10x 15x 20x 30x etc.
The next number in the description is the size of the lens, or diameter of the lens at the top of the loupe, ie: 12mm, 14mm, 18mm, 20.5mm or 21mm etc.
The types of loupes are generally referred to as "Doublets", "Triplets", "Quadruplets" or "Pentagonal". This refers to the number of lenses built into the loupe assembly, (more on this subject latter).
All loupes have a focal range, this indicates how far away from the object your viewing the lens will focus. This range generally decreases as the power of the loupe increases. ( if the object your inspecting is upside down, try moving the loupe closer to the object, this should correct the problem).
Expected focal ranges are from 1/8 of a inch to about 1&1/4 inches from the object your inspecting. A good average averge is 3/8 inch or greater. The strong 20x or 30x loupes with a shorter focal range may block a lot of the light needed to inspect the object.
Lenses sometimes have special coatings to correct the color.
Description of a "Doublet" lens loupe:
A doublet lense is constructed of a single piece of glass, with lenses ground on both ends of the glass.
Many lower cost loupes marked as triplets are actually doublets incorrectly marked as triplets, like the one pictured here on the left. The 10x 14mm loupe on the right is a Professional quality doublet.

Description of a "Triplet" lens Loupe:
A Triplet lense is constructed of three separate pieces of glass, mounted into one loupe assembly. The three lenses are often glued together, but on the higher powered loupes spacers are used to separate one of the lenses. These pictures are from a 30x 21mm triplet and a 10x 21mm triplet.

"Quadruplet" and "pentagonal" refer to four and five lenses built into the loupe, these are not as common but are available. Here is a picture of a Pentagonal set of Lenses, it has 2 sets of 2 lenses glued together and one single lens with spacers holding it in place in the center:

Slive Jeweler Loupe Eye Magnifier Magnifyi 30 x 21mm

Slive Jeweler Loupe Eye Magnifier Magnifyi 30 x 21mm



Glass Jeweler Loupe Eye Magnifier Magnifyi 30 x 21mm

Mini Jeweler Loupe 30 x 21mm Eye Magnifying Glass Magnifier with CaseGreat product for the watch making industry, specially for inspecting those tiny objectsGood for jewelry, coins, stamps and antiques etc..Foldable and tiny, great to have one in your pocket all the timeSilver in colorLen diameter: 21mmInspect object at 30 times powerSize: 38 x 26 x 18 mmPackage included1 X 30*21MM Jeweler Loupe with protective case

BUY IT NOW

Slive Jeweler Loupe Eye Magnifier Magnifyi 10 x 18mm

Glass Magnifier Jeweler Loupe Eye Magnifier Magnifying 10 x 18mm

Description:
　
1.Great product for the watch making industry, specially for inspecting the tiny objects 2.Great for jewelry, coins, stamps and antiques etc. 3.Tiny, great to have one in your pocket all the time 4.Color:Slive
5.Size: 10 x 18 mm

BUY IT NOW

Gold Jeweler Loupe Eye Magnifier Magnifyi 30 x 21mm

Glass Magnifier Jeweler Loupe Eye Magnifier Magnifying 30 x 21mm

Description:
　
1.Great product for the watch making industry, specially for inspecting the tiny objects 2.Great for jewelry, coins, stamps and antiques etc. 3.Tiny, great to have one in your pocket all the time 4.Color:gold 5.Len diameter: 21mm 6.Inspect object at 30 times power 7.Size: 38 x 26 x 18 mm Package included:1 X 30*21MM Jeweler Loupe with protective case

BUY IT NOW

Slive Jeweler Loupe Eye Magnifier Magnifyi 20 x 21mm

Slive Jeweler Loupe Eye Magnifier Magnifyi 20 x 21mm

1.Great product for the watch making industry, specially for inspecting the tiny objects 2.Great for jewelry, coins, stamps and antiques etc. 3.Tiny, great to have one in your pocket all the time 4.Color:Slive
5. 20 x 21mm

jewelers loupe

BUY IT NOW