| CDT-1000HD
 | Accuracy of 0.02% with a resolution of 0.01 RPM | Non-contact sensing from up to 24" with visible red light source | Measures speeds from as low as 1.00 rpm up to 99,999 rpm | NIST Certification Included at no additional cost | Five (5) year warranty!! | Built-in memory stores maximum, minimum and last reading for recall to the the display | Uses only two (2) AA batteries (included) | Rugged lightweight design for trouble-free operation |
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| | CDT-2000HD
 | Built-in memory stores maximum, minimum, average and last reading for recall to the display | NIST Certification included at no additional cost | Accuracy of 0.02% with a resolution of 0.01 RPM | Measures speeds from as low as 1.00 rpm up to 99,999 rpm  | Now includes larger 6 inch circumference Surface Speed Wheel standard | Molded Rubber Shell Provides Additional Physical & Environmental Protection | Can be set for use with 2 optional-sized surface speed wheel (12 inch or 10 cm) |
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