The Mark-10 Model ES20 Hand Wheel-Operated Test Stand (Rated Capacity: 100 lbF / 500 N), engineered and manufactured by Mark-10 Corporation in Copiague, New York, USA, is a compact benchtop mechanical testing platform designed for high-precision tension and compression testing applications requiring fine, smooth displacement control.

Hand Wheel Leadscrew Mechanical Advantage:
Unlike rapid lever-operated test stands that can introduce unpredictable shock loading and cause accidental force gauge sensor overloads, the Mark-10 ES20 utilizes a top-mounted hand wheel paired with an industrial precision leadscrew:
- Fine Incremental Travel Control: Each complete 360° turn of the hand wheel translates into precisely 0.083 in (2.1 mm) of smooth crosshead travel. This allows operators to approach fragile test specimens slowly, capture delicate initial contact events, and maintain constant strain without mechanical chattering.
- Self-Locking Mechanical Leadscrew: The crosshead retains its vertical position the moment hand wheel rotation ceases, allowing technicians to record static peak load readouts and conduct dwell testing without operator strain.

Model ES20 Configuration & System Architecture:
- 100 lbF [500 N] Loading Capacity: Tailored for small mechanical springs, wire crimps, miniature electronic assemblies, and medical packaging seals.
- Generous 9.0 in [229 mm] Travel Span: Provides ample clearance for tensile pull-off setups, compression platens, and elongated test specimens.
- Direct Native Force Gauge Mounting: Features pre-machined mounting patterns on the crosshead plate for direct attachment of all Mark-10 force gauge families (Series 7 such as M7-100, Series 5, Series 4, Series 3, Series 2, and Series E) without requiring third-party adapter brackets.
- Standardized Base Plate Matrix: The rugged anodized base plate incorporates an array of pre-tapped #10-32 UNF and 5/16-18 UNF mounting holes to accommodate a broad spectrum of tensile grips, wedge clamps, compression plates, and custom test fixtures.

Optional Field Upgrades & Modular Expansion:
- Digital Travel Display Kit (Model ES001): Adds high-precision digital travel length tracking with 0.0005 in [0.01 mm] resolution and USB/Mitutoyo data output for force vs. displacement testing.
- Structural Column Extensions: Increases working vertical clearance by 6 in [152 mm], 12 in [305 mm], or 24 in [610 mm] for tall test samples.

Target Industrial Sectors & Applications:
- Electronics, Connectors & Telecom: Micro-switch actuation force, membrane switch snap feel, USB terminal insertion/extraction testing, PCB surface-mount shear testing.
- Precision Spring Manufacturing: Tension and compression spring rate determination, deflection testing, and spring set verification.
- Medical Devices & Pharmaceutical Packaging: Syringe barrel friction/breakaway force, medical device trigger mechanism testing, needle hub pull-off verification.
- Flexible Packaging & Barrier Films: Heat-seal peel testing, blister pack integrity, adhesive tape 180° peel strength, foil film puncture resistance.
- Fasteners & Micro-Mechanics: Small wire harness crimp pull-off strength, miniature fastener tensile breaks, and small latch actuation.

• Manufacturer: Mark-10 (Mark-10 Corporation)
• Country of Origin: 100% USA (Made in USA)
• Product Line: Manual Force Test Stands
• Model Designation: ES20
• Maximum Force Capacity: 100 lbF [500 N / 50 kgF]
• Drive Mechanism: Top-mounted precision hand wheel with leadscrew drive
• Travel Rate: 0.083 in [2.1 mm] of linear travel per wheel revolution
• Maximum Crosshead Travel Distance: 9.0 in [229 mm]
• Vertical Daylight Clearance:
  - Up to 10.5 in [267 mm] (from base plate to standard Mark-10 force gauge shaft)
  - Extendable with optional column extensions
• Gauge Compatibility: Direct mounting for all Mark-10 force gauges (Series 7, 5, 4, 3, 2, Series E)
• Base Plate Fixture Mounting: Threaded base plate with #10-32 UNF and 5/16-18 UNF matrix holes
• Structural Metallurgy: Rigid extruded aluminum alloy column paired with heavy cast base plate
• Optional Modular Accessories:
  - Digital travel display kit (ES001) with SPC data output
  - 6-inch, 12-inch, and 24-inch column extension kits
  - Adapter plates for non-Mark-10 force gauges
• Overall Dimensions (W x D x H): Approx. 152 x 203 x 483 mm (6.0” x 8.0” x 19.0”)
• Net Instrument Weight: Approx. 7.7 kg (17.0 lbs)
• Shipping Weight: Approx. 9.5 kg (21.0 lbs)
• Compliance & Standards: Manufactured to American precision engineering standards, ISO 9001 certified.