Brand new and high quality.<br />Easily portable.<br />Photo/contact type<br />Model: DT-6236B<br />Look no further. Outstanding product quality， that's exceptionally built. Best of all， its very affordable price. Buy one right away.<br />1. 5 digits large LCD screen blue backlight display， letter height 31mm<br />2. Measure range: photoelectric speed way: 2.5-99，999RPM<br />contact speed way: 0.5-19，999mRPM<br />contact wire speed way: 0.05-1，999.9 m/min<br />3. Photoeletric speed way: 0.1RPM ( 2.5-999.99RPM )<br />1RPM ( > 1，000RPM ) <br />4. Contact speed way: 0.1RPM ( 0.5~999.99RPM ) <br />　　　　　 1RPM ( > 1，000RPM ) <br />5. Contact wire speed way: 0.01m/min( 0.05~99.99m/min )<br />0.1m/min( > 100m/min ) <br />6. Accuracy: ± (0.05%+1 letter) <br />7. Sampling rate: 0.8 times/s ( > 60 RPM )<br />8. Effective test distance: 50mm-500mm (laser)<br />9. Measure range choice: auto shift<br />10. Timebase: 6MHz quartz crystal<br />Timebase accuracy: 10 x 10-6 ( 0 degree centigrade - 50 degree centigrade )<br />11. Power supply: 4 x 1.5 AA battery/ external DC 6V power<br />Current consumption: about 50mA<br />12. Dimension: 205 x 76 x 40 mm<br />1 x Tachometer<br />4 x Accessory<br />4 x Screw<br />3 x Sticker<br />1 x English user manual<br />In original package<br /><img src="http://img6.eachbuyer.com/x16/p33/bb412_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_7.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_8.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_9.jpg" />                                                        <img src="http://img6.eachbuyer.com/x16/p33/bb412_10.jpg" />