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FAQs

Frequently Asked Questions

Same-Day Shipping

Q: When will my order ship?

A: Online orders received by 12:00 noon Pacific Time, Monday through Friday, will ship the same day.  Orders received later than noon may be delayed one business day.  Please note: Unexpected demand may also cause delays. Should this occur, we'll contact you for instructions.

XXT Products

Q: What's the difference between M3 and XXT products?

A: M3 products use 4.0 mm diameter stainless steel bases and fittings with carbide or ceramic shafts.  XXT products use 5.0 mm diameter titanium bases and fittings with carbide or graphite shafts.  XXT products weigh less than similar M3 products. 

 

Q: What's the difference between TL1 and TL3 XXT Adapter Plates?

A: The carbide balls on the top of the plate are in different positions.  See illustrations, below:

TL1 Plate

This is a TL1 adapter plate.  Note the side-by-side position of the two carbide balls at the 12 o'clock position.

TL3 Plate
This is a TL3 adapter plate.  Note the space between the two carbide balls at the 12 o'clock position.

Technical Information

Q: How do I clean an adapter plate?
A: Clean the contact points using a lint-free cloth moistened with a small amount of 70% isopropyl alcohol.

Q: How do I know which thread size to order?
A: Using metric calipers, measure the thread diameter on an existing stylus.  Round the result to the nearest whole number.  That’s your thread size.  2 mm equals M2, 3 mm equals M3, and so on.

 

Q: What is the thread size on Q-Mark's calibration spheres?

A: All calibration spheres have M6 threads.

 

Q: How do I qualify a disk probe?

A: Take at least 12 probings all over the disk.  For example, take 4 points around the equator.  Then move half the distance to one edge, and take 4 more all around.  Move to the opposite side and take 4 more all around. Compute the result.  If the standard deviation is too high, start over, taking more points.

 

Q: When should I use a cylinder stylus?

A: Cylinder styli are best suited for measuring edge features, like the edges of stampings, sheet metal, or thin lands between grooves.  A ball stylus is always a better choice than a cylinder stylus for everyday measuring tasks.

 

Q: How do I qualify a cylinder stylus?

A: To calibrate your cylinder stylus you must reduce the calibration sphere coverage angle so that the spherical end of the cylinder stylus is always above the equator of the calibration sphere.  We recommend a coverage of 150 degrees.  Now proceed with the calibration routine.  Please note that the form of the spherical end on a cylinder stylus will never be as precise as a spherical (ball) stylus.  Expect a higher standard deviation value when qualifying a cylinder stylus as compared to a spherical stylus.

After calibration, it is important to measure a known artifact, like a ring gage, to ensure that the result is within acceptable limits.  Sometimes it's necessary to adjust the calibration results to get the correct measurement from the artifact. Only when you are satisfied with the results from the artifact should you proceed with inspection.

 

Returns Are Easy

Q: How do I return merchandise for exchange or refund?

A: For online orders:

  • To return items ordered online, please call us at 1-949-457-1913 or email customercare@cmms.com.  A customer service representative will email a return label to you.  Please package the items carefully and place the return label on the outside of the container.  When the items are received by Q-Mark, you’ll receive a full refund to the original form of payment.  If the returned item is covered by our No Hassle Warranty, a new one will be shipped to you at no charge.  Non-warranty returns will be refunded to the original form of payment.  Please note that we cannot exchange items that were purchased online.  Instead, please place a new online order for the items you want, and return the unwanted items to us for a full refund.

 

For orders placed by email, phone or fax:

  • To return items, call us at 1-949-457-1913 or email customercare@cmms.com.  A customer service representative will email you an RMA number and a product return form.  Please package the items carefully, then ship them and the completed form to:

 

                                ATTENTION – RETURNS

                                Q-MARK MANUFACTURING INC.

                                30051 COMERCIO

                                RANCHO SANTA MARGARITA CA  92688-2106

 

Once received and inspected, a refund or account credit will be issued to the original form of payment.  If the returned item is covered by our No Hassle Warranty, a new one will be shipped to you at no charge.  

  

  

Still Have A Question? Contact Us

Our styli experts are available to answer any of your questions
7:30am - 4:00pm PST,  Monday through Friday.

Call us at 1-949-457-1913 or send an email to customercare@cmms.com.