Deformation testing device

A deformation testing device, comprising:

• a base configured to hold a workpiece, the workpiece comprising an elastic portion;
• and
• a testing machine arranged on the base, the testing machine comprising:
• a distance-measurement device configured to meter a moving distance of the elastic portion and comprising a meter base and a meter, the meter base secured to the base and comprising four sidewalls connected to each other end-to-end and a support post extending up from an upper side of one of the sidewalls, the four sidewalks cooperatively forming a receiving room, the meter comprising a retractable measurement probe;
• and
• a force-applying device comprising a force meter and a transmission member, the force meter slidably mounted on the base and comprising a three-applying post, the transmission member comprising a first post and a second post, the first post moveably extending through the meter base, the first post aligned with the force-applying post and configured to transmit a force from the force-applying post to the elastic portion, the second post secured to and extending up from the first post and partially received in the receiving room, the meter mounted on the support post, the measurement probe extending through the support post and configured for abutting against the second post, the force meter configured to apply and measure a force acted upon the elastic portion through the force-applying post and the first post.