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OD is an abbreviation for the Latin term oculus dexter which means right eye. Notice that the right eye information is asked for first even though we typically read from left to right.
OS is an abbreviation of the Latin oculus sinister which means left eye. That will be referenced on the far right column of the prescription.
SPH is short for sphere. The sphere of your prescription indicates the power on the lenses that is needed to see clearly. A plus (+) symbol indicates the eyeglass wearer is farsighted. A minus (-) symbol indicates that the eyeglass wearer is nearsighted.
CYL is short for cylinder. The cylinder indicates the lens power necessary to correct astigmatism. If the column has no value (is blank), it indicates that the eyeglass wearer does not have astigmatism. If this is the case on your prescription, you can leave it blank when entering it in.
AXIS is a prescription will include an axis value for those with astigmatism. This number represents the angle of the lens that shouldn't feature a cylinder power to help correct your astigmatism.
ADD is short for "additional correction." This is where details about bifocals, multifocal lenses or progressive lenses would appear.
Detailed instructions for Mack engines.
Mack Trucks proves that you can respect tradition while aggressively pursuing innovation. The Bulldog remains cast in chrome, but the infrastructure supporting it is built in the cloud.
If you are looking for specific, in-depth technical procedures for a particular model, I can help you locate the appropriate section within the . Just provide the model and year! mack trucks emedia
: Authorized dealers can access comprehensive service information, including campaigns and bulletins, through the Mack Trucks Dealer Portal. This is often the primary source for VIN-specific technical solutions.
: Use your vehicle's VIN or the specific model and year to filter for relevant manuals. Purchase/Download Detailed instructions for Mack engines
Guides for day-to-day vehicle operation and basic maintenance Diagnostic Information: Information on Diagnostic Trouble Codes (DTCs)
Mack Trucks has successfully transformed itself from a traditional heavy‑duty truck manufacturer into a provider of comprehensive digital solutions. The —encompassing everything from the foundational eMedia Center to advanced telematics, fleet management portals, driver apps, e‑commerce platforms, and freight solutions—represents a new standard for customer support in the transportation industry. If you are looking for specific, in-depth technical
The term "eMedia" for Mack Trucks is not just a single website; it is an umbrella for a total online strategy that redefines what it means to own and operate a heavy-duty truck in the 21st century. From the diagnostic software that keeps engines humming to the virtual showrooms where customers build their dream rigs, Mack is leveraging digital innovation to drive uptime —the industry’s most critical currency.
Gone are the days of keeping heavy binders in the cab. provides instant, searchable access to technical documents. Whether you are on the road or in the shop, a crucial troubleshooting step is just a click away. 2. OEM-Certified Accuracy
: The guide is built for a modern, mobile-first experience, making it easier to find feature operations while on the road. Why Genuine Documentation Matters
*Discount applied on the current website price at the time of order. Offer only valid for new customer first contacts order over $10. Maximum discount of $100. Cannot be combined with any other offers. Promotions are subject to change without notice. We reserve the right to cancel orders that are in breach of the terms and conditions of this offer.
| Lens Width | Bridge Width | Temple Length | |
|---|---|---|---|
| XS | < 42 mm | < 16 mm | <=128 mm |
| S | 42 mm - 48 mm | 16 mm - 17 mm | 128 mm - 134 mm |
| M | 49 mm - 52 mm | 18 mm - 19 mm | 135 mm - 141 mm |
| L | >52 mm | >19 mm | >= 141 mm |
Buying eyewear should leave you happy and good-looking. Use our sizing tool to find frames that best fit your unique facial measurements.
Grab a regular card with a magnetic stripe on the back. Student IDs, credit cards and gift cards work well to start our online PD tool.
You may have received our paper PD measurement tool in your recent online order. In order to use this tool, place the ruler on your eyes so that the "0" lines up at the centre in between your eyes. Add up the two numbers, to get your PD. See example below:
Click on this link to download and print your own PD measurement tool.
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