Motorized Tension / Compression Test Stand
Replaced by: Model F105 / F305 / F505


  • Selectable speed setting
  • Upper and lower travel limit switches
  • Adjustable, removable controller with intuitive menu navigation
  • Password protection of test parameters
  • Stepper motor-driven, producing smooth and quiet operation with no speed variation under load
  • USB output of force vs. time or force vs. travel
  • Compact footprint, suitable for crowded workbenches
  • Ergonomic design, with smart, clean cable management
  • Integrated electronics assembly, easily removed and transported
  • Adjustable mounting plate with T-slot base


Load capacity: 300 lbF (1.5 kN) @ up to 24 in/min (610 mm/min)
200 lbF (1 kN) @ >24 in/min (610 mm/min)
Maximum travel distance: 18.0 in (457 mm)
Speed range: Standard: 0.5 - 13 in/min (13 - 330 mm/min)
Optional: 0.02 - 45 in/min (0.5 - 1,100 mm/min)
Speed setting accuracy: ±0.2% of setting
Speed variation with load: ±0% (stepper motor driven)
Travel accuracy*: ±0.002 in. per 10 in. (±0.05 mm per 250 mm)
Travel resolution: 0.001 in / 0.02 mm
Limit switch repeatability: 0.001 in (0.03 mm)
Power: Universal input 80-240 VAC, 50/60 Hz, 60W
Weight: 56.5 lb [25.6 kg]
Shipping weight: 70 lb [31.8 kg]
Warranty: 3 years [see individual statement for further details]
HS code: Model no. HS code:
All controller options
Country of origin: USA

* Because load cell deflection and system deflection are present and not automatically compensated for, this equipment is recommended for applications requiring at least 0.2 in [5 mm] of travel distance.

In The Box

The ESM303 test stand is shipped as shown at left, and includes the following accessories: (1) G1028 small hook (1) G1038 medium hook (1) G1039 coupling, #10-32F/F (1) G1009 compression plate, 2” dia. (1) G1030 thread adapter, 5/16-18M to #10-32F (4) Thumb screw for force gauge / indicator (2) Thumb screw for limit switch (1) Allen wrench set (1) Control panel (1) Control panel mounting bracket and hardware (1) Power cord

Optional Functions

Any of the below functions may be purchased at time of order or may be enabled in the field at a later date through a code activation process. The only exception is the AF009 travel measurement option, which also requires field hardware installation.

A complete options package is also available, including all of the below features at a discounted price.

The test stand is shipped in Demo Mode, during which time all available features are temporarily enabled for 160 hours of operation.

Feature Part No. Description Requirements
FollowMe® AF008

Crosshead movement responds to manually pushing or pulling on the force gauge shaft or load cell. Increasing force produces greater speeds. Ideal for setups and quick positioning.

  • Series 7 or 5 gauge or indicator with load cell
  • AC1114 interface cable
Travel indication AF009 Travel is indicated on the control unit display, with output via USB. An internal scale utilizing Renishaw technology produces significantly higher accuracy than with conventional rotary encoder-based designs. Backlash and nonlinearity are virtually eliminated.
  • If data output to a PC is required, add AC1114 and AC1107 cables, and a Series 7 or 5 gauge or indicator with load cell.
  • Field activation requires hardware installation. Otherwise, hardware is factory installed at time of order.
Computer control AF010

The ESM303 may be fully controlled by a PC through a custom-written program in any language supporting ASCII communications. Also responds to the legacy Chatillon TCD command set and legacy Nexygen TCD software (not available from Mark-10).

This option is not required for MESUR®gauge Plus software.

  • Series 7 or 5 gauge or indicator with load cell
  • AF009 travel indication
  • AC1114 interface cable
  • AC1107 USB output cable
  • For full speed range, consider AF017 and AF018 speed range extensions
Programmable travel limits AF011 The stand stops at or cycles between programmable upper and lower travel distances.
  • AF009 travel indication option
Overload protection AF012 Protects a force gauge or force sensor against overload. Program the desired percentage of full scale of the gauge. Adjustable analog voltage setting allows the stand to interface with virtually any gauge with analog output.
  • Series 7 or 5 gauge or indicator with load cell
  • AC1114 interface cable
Auto return AF013 The crosshead moves to a limit switch, force set point, travel position, or break, then stops and reverses direction at full speed to the opposite limit.
  • If reversing at force set point: Series 7 or 5 gauge or indicator with load cell, and AC1114 interface cable
  • If reversing at travel limit: AF011 programmable travel limits option
  • If reversing at break: AF019 break detection option and AC1114 interface cable
Cycling / dwell time AF014 Same as auto return, but with the ability to program up to 100,000 cycles. Programmable dwell time for upper and lower limits (set independently) can be set up for up to 10,000 seconds.
  • Same as auto return, at the same speed in each direction. Add AF016 for independent up and down speeds.
Independent Up and Down speeds AF016 Configurable speeds for up and down directions.


Low speed extension AF017 Extends the standard speed range down to 0.02 in/min (0.5 mm/min).


High speed extension AF018 Extends the standard speed range up to 45 in/min (1,100 mm/min).


Break detection AF019 Crosshead stops at a sudden drop in force. Programmable percentage of peak force.
  • Series 7 or 5 gauge or indicator with load cell
  • AC1114 interface cable
Loadholding AF020 Dynamically adjusts the crosshead position to maintain a programmed load for an indefinite or specified period of time.
  • Series 7 or 5 gauge or indicator with load cell
  • If a specified time is required, add AF014 cycling / dwell time option
  • AC1114 interface cable
Preload / sample touch AF021 Stops the crosshead and/or zeroes the travel display at an initial preload - useful in tensile, compression, spring, elongation, and other applications. Preload is programmable as a percentage of force gauge/load cell full scale. Three modes: (1) stop, (2) stop and zero, and (3) zero without stopping.
  • AF009 travel indication
  • Series 7 or 5 gauge or indicator with load cell
  • AC1114 interface cable
Profiles AF022 Save and recall sets of test parameters, such as speeds, travel limits, preloads, etc. Up to 50 profiles may be stored. -
Complete options package AFCOMP Includes all functions listed above, plus AC1114 interface cable and AC1107 USB cable.
Requires a Series 7 or 5 gauge or indicator with load cell.

Hardware and Software Options

Shield (AC1092-3, AC1092-4)
Provides pinch and sample debris protection for the operator via hinged door.
Includes an electrical interlock, preventing test stand operation while the door is open.
The shield rests on the workbench, enclosing the ESM303 and most other Mark-10 motorized test stands and frames.
Two heights are available, accommodating an ESM303 with column extension of up to 24 in [610 mm].
Control panel tabletop mounting kit (AC1085, ESM303-004)
For applications requiring remote use of the control panel. Features an adjustable viewing angle and a base with thru holes for bench mounting. Use AC1085 for test stands produced in November 2020 or later, or ESM303-004 for test stands produced earlier.

Data collection & motion control software
Consider MESUR®gauge Plus for force vs. travel or force vs. time data acquisition, plotting, analysis, reporting, as well as motion control. The software coordinates motor start / stop and data acquisition with one click.

Note: MESUR®gauge Plus does not require any optional test stand functions, such as PC Control. If force vs. travel vs. time output is required, order the Travel Indication option. See below section for details.

A wide range of force gauges and gripping fixtures
Interface cable, gauge to test stand (AC1114)
Connects Series 7, 5 and Series 4 force gauges to the crosshead. This single cable is used to transmit data and power. The gauge's AC adapter is not required.
USB cable, test stand to PC (AC1107)
For force and travel data output and PC control.
Load cell / indicator adapter (AC1062)
Accommodates any Mark-10 indicator and Series R01 or R03 force sensors. Includes mounting hardware.

Load cell hardware kit (AC1064)
Set of mounting hardware to mount other manufacturers' load cells with #10-32, 1/4-28, or 1/2-20 mounting threads.

Note: Series R01 and R03 load cell part numbers ending in -1 (ex: MR01-500-1) include mounting hardware for an ESM303H.

Single column extensions (AC1094-1 / -2 / -3)

Increase the vertical clearance for tall samples. Multiple extensions may be stacked for very long samples.

Three lengths are available - 6, 12 and 24 in [150, 300, and 600 mm].

Old part number: ESM303-001-1 / -2 / -3

Double column extensions (AC1095-1 / -2 / -3)

Accommodate up to a 20 in. [508 mm] wide sample, or ø21.5 in [ø546 mm] round sample.

Three heights are available - 6, 12 and 24 in [150, 300, and 600 mm]. Base contains rows of T-slots for fixture mounting.

Old part number: ESM303-002-1 / -2 / -3

eye end adapters photo Eye end adapters
Allow for quick grip installation and removal, and prevent grip rotation.
Mount to common test frames, load cells, and force gauges.



Ordering Information

Model Description US Price
ESM303 Motorized test stand,110V* $3,400.00
AC1094-1 Single column extension for ESM303, 6" $440.00
AC1094-2 Single column extension for ESM303, 12" $610.00
AC1094-3 Single column extension for ESM303, 24" $770.00
AC1095-1 Double column extension for ESM303, 6" $1,925.00
AC1095-2 Double column extension for ESM303, 12" $2,200.00
AC1095-3 Double column extension for ESM303, 24" $2,472.00
AC1092-3 Shield, 51.9" height, ESM303 with column extension up to 24" $3,360.00
AC1092-4 Shield, 34.4" height, ESM303 $2,370.00
AC1085 Control panel tabletop mounting kit, Nov. 2020 or later $200.00
ESM303-004 Control panel tabletop mounting kit, Oct. 2020 or earlier $375.00
AC1114 Test stand-gauge interface cable $135.00
AC1107 USB cable $30.00
AC1062 Load cell / indicator mounting kit for ESM303 $265.00
AC1064 Load cell hardware kit for ESM303 $60.00
Controller Options
AF008 FollowMe® $315.00
AF009 Travel measurement $1,150.00
AF010 PC control $1,150.00
AF011 Travel limits $315.00
AF012 Overload protection $315.00
AF013 Auto return $220.00
AF014 Cycling $315.00
AF016 Independent up/down speeds $190.00
AF017 Low speed range extension $220.00
AF018 High speed range extension $220.00
AF019 Break detection $220.00
AF020 Load holding $495.00
AF021 Preload $315.00
AF022 Save multiple profiles $630.00
AFCOMP Complete options package $4,540.00

* ESM303 contains a universal power supply (80 - 240V) and includes a power cord with US plug. Add suffix ‘E’ for Euro plug, ‘U’ for UK plug, or ‘A’ for Australian plug. Ex: ESM303E

Power cords also available for purchase individually.