PAGE 166 — ETALON INGAGE 531B
Unlike the cheap Asian imports, these gages have been in use for decades and you can confidently expect them to be useable for many more.
Manufactured in French-speaking Switzerland, Etalon ingages (also called Intalometer) are indisputably the best quality internal bore measuring micrometers. These will make direct readings right to the end of a blind bore (the bottom of the hole).
Three tungsten carbide tipped measuring arms extend from the end of the larger gages (> 4") when the thimble is turned, and readings are taken from the vernier, just like a micrometer. Gages under 4" have hardened steel measuring arms. Very small bores under .402" only have one or two hardened steel arms, for 2 point measurement.
Because of the mechanics involved, the ranges are quite narrow for each gage. You can buy the ingage model which will measure exactly the bore you are testing, or you can buy these in a full set so that you will have a large measuring range. Each ingage has to be calibrated to a setting ring, so you'll need one or more of those as well.
Gage heads are not interchangeable. That means you won't be able to remove the spindle of one gage and insert it onto another measuring head. Each unit must stay intact.
A nice feature of the Etalon ingage is that several depth extensions can be added which allows you to measure deeper bores. No other tool allows you to measure small diameter bores at any depth beyond a few inches.
For easy ISO compliance, each gage has an ID number and comes with an inspection report and declaration of conformity.
Metric models are also available. Please note that Long Island Indicator Service does not repair the Etalon Ingage. You will want to contact the manufacturer for reliable repair service.
These gages are too precious to order casually online. Please contact a genuine ETALON or Brown & Sharpe distributor so that you can get proper technical assistance should it be necessary.
Please contact us if you would like to place an order using a company purchase order. It is fair to say that these are rarely in stock in the US. You will have to allow 6 to 12 weeks for delivery in most cases. You may want to inquire first about current stock.
Measuring depth is limited depending on the size of the gage, but up to 2 additional depth extensions can be installed. Installing more than 2 extensions will probably hamper anvil retraction, especially when used in a vertical position, and is not recommended.
When reading the inch scale on the barrel, the larger lines represent .001" and the shorter lines represent .0005"
On the vernier you will see the numbers 0-1-2-3-4-5 which are used to read .0001" immediately after one of the long lines. If the zero has passed the short line, however, these numbers are interpreted as 5-6-7-8-9.
Spending a few minutes with your gage and these instructions will make everything self evident.
The amount of torque applied on the friction thimble greatly affects the readings. To minimize variation, the person who uses the gage should also be the person who calibrates the gage. Two different users are likely to get two different results.
It is a simple matter to use two setting rings: one for the top range of the ingage and one for the lowest range. Simply take a measurement and the readings on the ingage should equal the size of the setting ring.
If the gage is used for only one particular measurement, then you can use a setting ring of that size to verify accuracy.
There are no adjustments that can be made to the gage if these values are off.
My customer is complaining about the range of model 78.112375. Do you know what the minimum and maximum range are? To me it seems like aprox .240" to .260" The foot stops at about .267" but my customer thinks its supposed to go to .275"?
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