Monroe Systems for Business

Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator

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  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Available Now)
  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Front View)
  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Function Sheet)
  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Right Side View)
  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Left Side View)
  • Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator (Back View)


Monroe ClassicX Heavy-Duty 12-Digit Programmable Accounting Printing Calculator 

The Monroe ClassicX boasts incomparable touch made possible by its famous IKT (Individual Keyswitch Technology) and superior functionality-unmatched in the world of printing calculators. We've carefully designed and built our machines based on decades of listening to our customers' needs. The ClassicX features our newly updated printer which is compatible with supplies such as the Monroe M33X cartridges, Monroe P65M ribbon spools, and our 15 lb. or 20 lb. signature paper rolls

Key Features

  • Velvet touch keys with individual key switch technology - our keys have a more responsive touch than any other printing calculator brand, you will feel the difference
  • Print speed of 5 lines per second
  • A large, fluorescent blue display - each display digit measures 5/8ths of an inch
  • Select running subtotal or last entry to show on your display
  • Enclosed paper roll to protect from dust build up (read our blog on the enclosed paper roll)
  • Red LED indicator to make users aware of an active calculation that has not been totaled yet
  • Automatically prints and advances tape above the tear-off knife on a single press of the total key – no more advancing the paper roll manually. We even provide the option to turn this feature off to reduce paper management and save paper.
  • Hidden storage compartment for a spare paper roll and a twin-spooled ribbon to reduce downtime retrieving supplies
  • (2) 4-key independent memories that will allow users to simultaneously run multiple calculations
  • Independent operation of multiplication and division, which enables users to multiply and divide without interfering with their addition and subtraction totals

Those who know, choose Monroe.

Recommended Supplies and Accessories

2 ¼” x 150′ Paper Rolls  -- Universal premium 15 lb. or 20 lb. single-ply paper rolls for calculators
Monroe M33X Ribbons -- Ribbon cartridge compatible with all Monroe X Series printing calculators
Large Elevation Wedge -- Foam wedge designed to elevate heavy-duty calculators
Calculator Supply Kit -- Starter supplies kit for Monroe calculators with ribbons & paper rolls
WHAT THE EXPERTS SAY: Joe Spurka, Vice President of Operations at Monroe on the ClassicX:  


1. What's something people should know about the ClassicX? Why should they choose this Monroe calculator over another machine?

The Monroe Classic is one of the most popular calculators Monroe has ever produced. The new ClassicX is designed with the same key layout, functionality, and key touch as the original Classic, along with some enhanced features including a new “cool gray” look, a larger display, and an updated printer to match the supply needs of our current X-series calculator line. Monroe Calculators are designed to last and have long been considered the "Cadillac of Calculators".  Monroe exists today after 110 years because of our customers.  Our team takes great pride in our product knowledge and our customer service is unmatched.

2. What are some of the common jobs that customers will use the ClassicX for?

The Monroe Classic has been a favorite with accountants, especially touch operators, due to the velvet key touch, or IKT, Individual Keyswitch Technology.  Although 80% of the work done on any calculator is add, subtract, multiply, & divide, the ClassicX is a perfect fit for calculator users in any industry. While most customers rely on Monroe for the basic calculator functions, many customers have taken advantage of the superior functionality offered in this model's predecessor - the Monroe Classic. This includes basic finance, automatic crossfooting, and time clock functionality.

3. What’s some positive feedback you have heard from customers about the ClassicX? 

While the ClassicX was still on pre-order, I personally talked with many customers who were extremely excited about the return of the Monroe Classic.  The Classic was introduced in the early 2000s and brought the return of IKT (Individual Keyswitch Technology), after years of its absence. While our current UltimateX also features IKT, the Classic has always held a special place in Monroe history and in our customers' hearts. Among other favorites of the original Classic, the dual independent memory along with the capability to figure basic loan payments have been among the popular requests. We're excited to bring back the familiarity of the Monroe ClassicX and are confident it will be a customer favorite once again.

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Warranty Information

Lifetime phone support and 6-month warranty for parts & service.
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Additional Information

Calculator Type:
Desktop pint/display
12-digit print/display
Product Dimensions:
15.30 x 9.50 x 3.70 in
4.08 LBS
Print Speed:
5.0 lines per second
Display Type/Color:
Fluorescent, blue
Inking System:
Black/red ribbon cartridge or spools
Individual Keyswitch Technology (IKT)
Decimal Settings:
=, F, 0, 1, 2, 3, 4, 6
Non-Add/Date Function:
Yes, print entered reference number or date
Two (2) 4-Key Independent
115Volts 0.2Amps 60HZ
Truncate, 5/4 Round Off, Round Up
Yes, automatic
Yes, with %+ and %- capability
Grand Total:
Yes, group and grand total
Item Count:
Yes, intelligent item count, automatic averaging
Percent Change:
Yes, computes amount and % of change
Square Root:
Yes, entry followed by divide then equals
Change Sign:
Yes, changes the sign of an entered amount
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3 Reviews

  • 5
    Monroe ClassicX 12-Digit Heavy-Duty Printing...

    Posted by Roger Hall on Mar 03, 2023

    Monroe ClassicX 12-Digit Heavy-Duty Printing Calculator

  • 4
    Review of the new...

    Posted by Robert Valentine on Feb 19, 2023

    I like the look and feel of the new ClassicX calculator. The display is large and easy to read. The keys are easy to press and very responsive. The print speed is a fast 5.0 lines per second. The only thing I don't like is the printing on the paper tape. It is very light, even after purchasing the M33X cartridge and installing it. If the print quality could be corrected, I would give the ClassicX a 5 star rating and be very happy with the calculator.

  • 5

    Posted by George Politis on Feb 17, 2023

    I am a CPA and I use calculators all the time. Monroe calculators are my favorite ones. The keys are convenient located for efficient input, the calculator is fast, and you can see your input on the tape as you input the numbers whereas other calculators you have to pull up the tape to see. The numbers are large on the tape. The calculator does not go to sleep every few minutes like some others. The only thing I would like to see is the numbers on the display to be more round instead of being too elongated. Instead of 17 mm they can be 15mm for easier viewing. Great calculator and I highly recommend it to my colleagues.

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