Review on General Tools DCFM8906 Digital Display by John Stowers

Overview: General tools DCFM8906Accuracy is expressed as a percent of upper range limit according to the manufacturer, not as a displayed value. So the claimed accuracy is +/- 177 fpm (5900 x 3%). As 3% of the displayed value is the minimum expected from decent lower level certified models these days, this degrades this unit at measurement speeds below about 60 mph.ft/m5900 3% (67.0 mph) accuracy 2950 6% (33 .5 mph ) 1475 9% (16.8 mph). etc. If anyone at General Tools thinks this review by others at General Tools is wrong, please let them know in the comments: I don't want this product to get an unfair review. Note that 2 other companies using the same design base have also confirmed that their accuracy is % of the upper range limit and not the value shown.