Amprobe-TACH20-Tachometer-Amprobe-3311961-p-The-Amprobe-TACH20-hand-held-tachometer-accurately-measures-rotational-or-surface-speed-as-well-as-length-It-comes-with-a-large-LCD-display-that-allows-the-user-to-easily-read-the-measurement-It-also-has-a-built-in-memory-function-that-permits-automatic-storage-of-maximum-minimum-average-values-plus-the-last-measurement-displayed-BR-BR-BR-The-TACH20-is-supplied-with-all-the-necessary-accessories-designed-with-optimal-mechanical-stability-t