Blue Steel Engineers Pvt Ltd offers Stands for Holding Durometer. Blue Steel Engineers Pvt Ltd. Has received many international prizes like The German Gold Medal at the Leipzig Spring Fair for "Product Excellence", International Gold Medal at the 35th Plovdiv International Fair [Bulgaria] for "Product Excellence". Stands for Holding Durometer with model numbers STD A and STD D is used for obtaining most uniform and reliable results from the use of hardness testers. It consists of a spring loaded table which can be raised on to the two holding pins. The tester can be just slipped on to the two holding pins. When testing, the movement is under constant pressure and is absolutely vertical, thereby eliminating any possibility due to human error on various accounts.