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Standard to calibrate mini lathe. for taig|sherline

What is for sale: Standard to calibrate mini lathe. for taig|sherline
To work precise on the mini lathe you need a perfect reference point. You need a Stephan Ferdinand calibration Standard. This is NOT a cheap rusting China made. It is a Stainless Superalloy hand lapped to near perfection by master craftsmen in Costa Rica.
Clamp the big side to the chuck and insert the center into the recess. Taste the standard with an indicator sliding it between the two engraved limit marks from left to right. Calibrate you tailstock untill you have the lowest possible differential reading of the indicator.
Set the spindle to the lowest speed and run it wile tasting the standard. Read the runout.
This is a CYLINDER standard. Meaning that the only true surface is the cylinder between the marks and not the end caps.
It is a perfect cylinder within 0.005mm (0.0002") but the diameter is not given. It varies between 8mm min and 10mm max. Length is also irrelevant and varies from 100mm (3.1") minimum to 125mm (3.9") maximum. The shank is between 12.00mm and 13.00mm suitable to be clamped on 1/2" devices (chuck, ER collet, 5C collet and so on).
* We have friendly staff to help you out. Don't be shy, ask!
Warranty starts the day and time you sign for your item, recorded by the Post Office on delivery and handed to us.
30 day satisfaction warranted or your money back.
* Refunding of returned items will not be done until received and checked for a valid reason (30 day satisfaction warranty) If the returned item does not qualify for this warranty you will not be refunded. Return postage is standard rate.
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TEMPORARY PERSONALIZED EMAIL: emorgan@desmoines-classifieds.com (Edwin Morgan)
Contact emorgan@desmoines-classifieds.com (Edwin Morgan) for more information. Your emails will be instantly forwarded to the poster's private address.

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Standard to calibrate mini lathe. for taig|sherline