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RX-DD-CF Type CF Digital Durometer for Seat Foam Hardness (DD-4-CF)

Made in USA
RX-DD Digital Durometer
Click images to enlarge.
Available Scales: A, AO, B, C, D, DO, E, M, O, OO, OOO (Asker, ISO, DIN & JIS Scales also available, inquire)

The new Check-Line RX-DD is a precision Digital Durometer ideal for laboratory use. It features a large direct drive LCD display, RS232 data ports for computer compatibility, a locking feature to prevent accidental erasure of tolerances, automatic shutoff, low battery warning, and accessories such as MTI and SPC type printers, audio attachments and software.

Type M Durometers require test stand OS-3 per ASTM D2240.


  • Includes NIST-Traceable Calibration Certificate
  • High and low buttons for setting tolerance limits
  • One year warranty
  • Holds Peak reading until reset
  • 0.1 Unit Resolution
  • Supplied in custom fit carrying case
  • Conforms to ASTM D-2240
  • Optional Removable Stainless Steel Barrel for Medical and Food Applications
  • Minimum Sample Thickness-Type A = 6.35 mm (0.250")
    Minimum Sample Thickness-Type M = 1.25 mm (0.050")
  • CE Marked, RoHS Compliant

Portable Battery-Powered Printer for Hardcopy Documentation

Need a hard copy printout of your measurement results?

Our P-190 Printer with the G03-0086 Cable will allow you to print each reading as it's shown on the display. The user simply depresses the thumb switch each time they want a value transferred to the printer. Simple yet effective!

The battery-powered P-190 Printer uses standard rolls of adding machine paper, unlike thermal printers the printout will not fade over time. It is supplied with a battery charger for operation on all power worldwide.

Order the following items as shown in the accessories section of the BUY NOW section at the bottom of this page.
P-190 Printer
G03-0086 Data Transfer Cable and Thumb Switch

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Durometer Test Stands

AD-100 Durometer mounting in optional test stand We offer a complete line of durometer test stands. The stand, when used in conjunction with a Durometer, eliminates operator error sometimes associated with hand-held durometer testing. Our stands feature a load weight for the proper testing pressure as noted in ASTM D2240, and a quick-lock column for easy adjustment. Click here for more info on Durometer Test Stands.


Complete Kit

The RX-DD is supplied as a complete kit including the durometer, instruction manual and calibration certificate in a foam-fitted metal carrying case.


Measruing Range0 - 100 Units
Resolution0.1 Units
Accuracy*±1 durometer unit (A,B,C,D,E,O,DO)
±2 durometer units (OO,OOO)
±4 durometer units (M)
Tolerance± 0.5 at "100" and -0 +1 at "0"
Dimensions2.25" x 6.125"
Weight7.15 oz.
Battery(2) 3V CR-2450 Coin Batteries
External Power SupplyUse G13-0055 Cable with USB Power Block or USB Port
Warranty1 year
Mounting Thread5/16-40
* Noteper ASTM D 2240-05, Sect 9.3: It is accepted that durometer readings below 20 or above 90 are not considered reliable. It is suggested that readings in these ranges be omitted.
DD-DB1 - "Smart" USB Cable
The DD-DB1 "Smart" USB cable connects the durometer to a computer. The output of the SmartCable Keyboard is a standard USB 2.0 keyboard signal. Connecting the SmartCable Keyboard with its built-in keyboard wedge to a computer will allow the SmartCable to be identified as a keyboard device that can send data to any Microsoft Windows application - no software wedge required. The SmartCable Keyboard will make the gauge readings appear as if they were typed in using a standard keyboard - eliminates data collection errors. If you want to collect data into a Microsoft Excel spreadsheet, simply select the cell where you want the data to appear.


Buy Now

Item Description Price
Type CF Digital Durometer for Seat Foam Hardness (DD-4-CF) - This item is no longer available. There is no replacement.
Durometer Test Stand for RX Series Durometers
Constant Load Weight for Asker C Durometer with pencil type barrel, Tapered Design, NB Spec
Upgrade to Removable Stainless Steel Barrel for Medical and Food Applications
(Must be specified at time of order, not suitable for use with RX-1600-M or RX-1600-OOO-S)
Smart USB Data Transfer Cable, Sends data to any Windows program with press of a button - 600-11-KB-USB
USB Data Transfer Cable from DD-100 or RX-DD Digital Durometers to a PC for transfer to a Wedge or Data Collection program purchased from a 3rd party
Oversized Carrying Case for Durometer with Constant Load Weight Attached
Rectangular Footer for Durometers with 1/2" Diameter Barrel, 41 x 19 mm
ISO-17025 Calibration & Certification for Durometers
Portable Battery-Powered Printer
Battery-Powered Portable Serial RS-232 Impact Printer supplied with AC-Adapter/Charger
RS-232 Data Output Cable for MTG / DD-4 / DD-5 / DD-100
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.