The latest reading of US manufacturing activity from Markit Economics came in at 52.9, the lowest level since October 2013. Economists had estimated a Purchasing Manager's Index flash reading of 53.8 in August, unchanged from the prior period. Manufacturing output growth slowed from a three-month high in July, weighing down the index. New orders and employment also grew at a slower pace. "August’s survey highlights a lack of growth momentum and continued weak price pressures across the U.S. manufacturing sector, which adds some fuel to the dovish argument as policymakers weigh up tightening policy in September," wrote Markit senior economist Tim Moore. "With the headline PMI swiftly losing ground after a modest rebound during July, the latest figure now points to the weakest overall pace of manufacturing growth for almost two years." Survey respondents also noted that the strong dollar continues to hurt export sales, and weaker energy prices are slowing capital spending in that sector. Earlier this week, the Empire State manufacturing survey index fell to the lowest level since 2009, and the Philadelphia Fed's manufacturing index was stronger than expected. More to come ...SEE ALSO: Turmoil in Greece Join the conversation about this story » NOW WATCH: Time-lapse video shows the beauty of the most dangerous mountain trail in the world