19 starrett.com M anual F orce T esters MTH Manual Testers The MTH Manual Tester is a single column, manually-operated force tester.The MTH has a load measurement capacity of 550lbf (2500N, 250kgf) and can be used for compression or tensile testing. The mechanical advantage afforded by the MTH-550's precision, high-resolution worm gear design lets you test effortlessly. One rotation of the hand wheel positions the crosshead 0.03" (0.75mm).Total stroke for the MTH-550 is 4" (102mm). Force measurement is performed using a Starrett digital force gage. The MTH-550 is an ideal, affordable solution for spring testing. Fit the MTH-550 with a digital force gage and optional digital scale to determine spring rates, initial tension and more. The hand wheel may be positioned anywhere along the 30" (762mm) column, and with a 4" (102mm) throat, large samples can be accurately tested. The base may be permanently affixed to your workbench. Optional gage adapter kits are available for use with non-Starrett force gages. Quick-change clevis adapters let you mount a large selection of Starrett testing fixtures. Fea tures • Tension or Compression Testing • Excellent for Cost-Effective Spring Testing • Effortless Crosshead Movement • Precision Worm Gear Design • Excellent Position Resolution: Single Rotation for 0.03" (0.75mm) • 30" (762mm) Column Height, 15" (380mm) Working Area • Adjustable Gage Mounting MTH - Manual Force Tester, Hand wheel Control Model No. Load Capacity Crosshead Travel Resolution/Rotation Throat Weight Vertical Test Space (max.) Thread N KGF LBF in mm in mm in mm lbs kgs in mm mm MTH-550 2500 250 550 7.5 190 0.03 0.75 4 102 22 10 15 381 M10 x 1.5-5H The MTH-550 may be equipped with optional legs so that you can test in a horizontal position. Shown with optional digital scale Shown with optional digital scale