Accurate, Reliable, and Better Than Before

At RPO, we understand the value and importance of reliable equipment that's not only accurate, but consistent with meeting your expectations.

With this in mind, we've made improvements to the design of our Scratch-Dig Comparators; exceeding industry standards yet again.


Molded In-house

Every Scratch-Dig Comparator is made in-house at our Rochester, NY facility


Certification Available

Our Scratch-Dig Comparators are made to be certified at any point in time


Clean Room Friendly

Every Scratch-Dig Comparator is packaged in a durable Polypropylene case

RPO Scratch-Dig Comparator

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RPO Standard Product

Part Number: 2M1524

RPO's Scratch-Dig Comparator is essential for accurately and efficiently inspecting optical components to MIL-PRF-13830B standards. It ensures high-quality, reliable, and durable optical systems, which is critical for applications that demand the utmost precision and performance. By adhering to these standards, RPO continues to uphold its reputation for excellence in the optics industry by producing products to MIL-STD requirements, as well as other relevant industry standards.

Product Specifications

RPO Part Number: 2M1524
Material: Molded High Quality Plastic/Acrylic
Dimensions: 0.25"W x 4.62"L x 1.75"H with 2"L Handle
Scratch Number: 10, 20, 40, 60, 80, 120, 160
Dig Number: 5, 10, 20, 40, 50, 70, 100

 

Additional Information:

Instructions For Use:

Under MIL-PRF-13803B compliant inspection conditions, hold the paddle adjacent to the optical element subject to inspection. To visually compare surface imperfections from the optical element, determine the dimension of the imperfection utilizing the incremental scaled on the paddle. Scratches are to be compared to the scale examples shown on the vertical bars, look for the label "Scratches" on the left side of the paddle when facing the operator. Digs are to be compared to the round scale examples immediately below the vertical bars, look for the label "Digs" on the left side of the paddle when facing the operator.

 

Cleaning Instructions:

Remove any debris from the S/D Comparator using compressed air only. Keep the S/D Comparator away from all solvents and inside the protective case when not in use.

 

Important Notice: This guide is intended to provide general assistance to operators in performing visual inspections and utilizing the Scratch/Dig Comparator in accordance with MIL-PRF-13803B standards. It is not a replacement for the full MIL-PRF-13803B specification, or any product-specific design or contractual requirements. Operators are advised to refer directly to the official MIL-PRF-13803B standard for complete and authoritative details. This guide is for support purposes only.

SD-Comparator Instructions Diagram

Instructions and Care Guide PDF

10

$159.99/ea

The minimum quantity available for order.

Most popular

50

$129.99/ea

Our most frequently ordered quantity.

100

$99.99/ea

Increased savings when you order larger quantities.

250+

Contact Us

Please fill out the form below to receive pricing.

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Looking to order?

Please fill out the form to start an order. Scratch-Dig Comparators are sold at a minimum quantity of 10. Please defer to the pricing table located above this form for an estimated cost of your order. 

There is a FAQ table located beneath this form for any questions pertaining to your order. For any additional questions, or assistance with pricing, quantity, or delivery requirements, please contact us at sales@rpoptics.com.
Scratch-Dig Comparator

FAQ

For any additional questions, please use the button below to contact us.
 
Contact Us
How do I get the Comparator certified?

You can get your comparator certified by contacting a suitable company and mailing your equipment to them for certification. Contact RPO for recommendations.

Can I request a sample?

At this time we do not offer samples. If you require less than our MOQ, please contact RPO for alternative options to purchase low volumes.

What is the current packaging option?

The packaging is made from a protective, scratch-free material that is soft, acid-free, and breathable.

How often should I order a replacement?

The RPO Scratch/Dig Comparator is intended for regular use in a manufacturing environment. With typical wear and tear, the comparator is expected to exhibit best performance over 6 months to 1 year of regular use. To ensure continued accuracy in surface quality inspections, we recommend ordering replacements within this timeframe. 

Do you ship internationally?

Yes, we do ship internationally!

How long will it take for my order to arrive?

Shipping time will vary depending on the quantity you order. Orders less than 250 will on average take 1-2 weeks. Orders of 250 up to 499 may take 3-4 weeks. For quantities of 500 and beyond, please call for current lead times.

If you need delivery by a specific date, or sooner than initially requested, please contact your representative.

For international shipments, please expect delivery time to be longer due to transit.

Do I have to order the minimum if I only need to replace 1?

If you require less than our MOQ, please contact RPO for alternative options to purchase low volumes.