VoorTech Consulting
362 E. Holderness Road
Holderness, NH 03245

MeasureJ2X Information and Requirements

The MeasureJ2X program is a full featured software program for measuring tree rings. The program enables capture of measurements from a variety of measuring stage/encoder/digital readout units and has features for creating measurements of new series or editing existing series. The editing capabilities include being able to append, insert or delete measurements from a series and shift a series forwards or backwards in time.

The latest version of the program (released June, 2007) added support for the measurement of earlywood/latewood series, manual measurement input, extended series ids, integrated help system and added an autosave feature.

The program reads and writes files of series in the "decadal" format, allowing its output to be used with analysis programs available from the Dendrochronology Program Library (DPL).  

Hardware Requirements

The program runs on either a PC or a Mac computer and supports measuring using a measuring stage with a linear encoder and digital readout unit connected to the computer via a serial port. To run on other platforms or for questions about a specific hardware configuration, contact us directly at

Measuring system requirements

A digital readout unit of one of the following types with proper cabling between the digital readout and the serial port of the computer.

The digital readout must be connected to a measuring stage with a linear encoder for capturing measurements. There are various suppliers of this portion of the system, but a system such as those supplied by Velmex, Inc. will meet the program requirements. The Velmex, Inc. system consists of a measuring stage with an Acurite linear encoder with a Metronics QC10V (Quadra-Chek 10V) digital readout unit.

    • Metronics (Quick-Chek 1000 or 1100, Quadra Chek 10 or 10-V)
    • Boeckler
    • Acu-Rite
    • Measucron
    • Sony
    • other digital readout units are supported by plug in modules  (For more information, contact us directly at

PC requirements

The program requires a PC running any of the Windows versions beginning with Win95, including Win98, WinME, WinNT, Win2000 or WinXP.

A minimum of 32 Mb of memory is required under Win95, and 48Mb or more recommended. For Win98 and WinME a minimum of 48Mb is required and 64Mb or more is recommended. To run under WinNT, Win2000 or WinXP the minimum memory configuration will depend on the configuration of the machine, but 64Mb is a suggested minimum, with 128Mb or more recommended. If you plan to run on anything less than 48Mb, please contact us at

The PC must have a serial communications port of one of the following types:

    • RS-232 serial port (i.e. COM1 or COM2)
    • USB port with a RS-232 serial converter such as those made by KeySpan (Part #USA-19HS)

 Approximately 25Mb of disk space is needed for the installation.

Mac requirements

The program requires a Macintosh running OS X V 10.3 or later with all Apple released updates installed.

The Mac must have a serial communications port of one of the following types:

    • Mac: RS-422 serial port (usually Modem Port or Printer Port )
    • USB port with a RS-232 serial converter such as those made by KeySpan (Part #USA-19HS).

Approximately 25 Mb of disk space is needed for the installation.

To run the program on previous versions of the Mac OS (System 7,8 or 9 or Mac OS X V10.2 or earlier) please contact us at


The program is available by subscribing to ProjectJ2X for a cost of $180. A subscription to ProjectJ2X entitles the subscriber to a copy of the MeasureJ2X program, technical support and upgrades. More information on ProjectJ2X and subscribing can be found at the ProjectJ2X web site:

MeasureJ2X has been developed by VoorTech Consulting through support from the dendroecological community.