Extensometer – Model 100R

The Tinius Olsen model 100R is a high-elongation extensometer that is meant to measure the ‘stretch’ of a broad range of materials including non-rigid plastics and elastomers. The preliminary measuring length, or gauge length, can be altered to match the specimen size or the test standard that is being applied.

The unique design guarantees a very low tracking force for testing sensitive materials, as well as sturdy construction that can easily endure the high release forces and breaking energies with particular specimens. The design also uses a simple yet effective technique with which the extensometer followers are attached to the specimen, allowing fast throughput of testing. Extension is measured by attaching two counterbalanced extensometer clamps to the specimen at a pre-selected gauge length. When tensile forces are applied to the specimen by the testing machine, the smallest change in gauge length is measured by an optical encoder. Signals from the optical encoder are fed into the signal conditioner interface for processing. The 100R extensometer can be fixed to all sizes of screw driven materials testing machines.

100R Specifications

Elongation Measurement Range mm
720 (extended options available)
28.35 (extended options available)
Gauge Lengths mm 10, 15, 20, 25, 40, 50
Accuracy   1% on 25 mm gauge length, ISO 5893 class A, ASTM E83 class C
Resolution mm
Tracking Force g
Specimen Thickness mm
0 to 5
0 to 0.2
Dimensions (H x W x D) mm
1015 x 53 x 200
40 x 2.1 x 7.9
Weight kg

Extensometer – Model 100R

Extensometer – Model 100R
Model 100R long travel extensometer on specimen.
Model 100R long travel extensometer on specimen at specimen break.
Model 100R long travel extensometer machine mounting detail.

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