七十年代中期,英国《海伯特》(Henbent)控制仪器公司为美国底特律一家发动机厂提供了一台Sigma气缸体全自动检验机,据称是英国生产的最大最先进的一种自动检验机。这台机器自重30吨,高3.66米,可检验四种型号V6与V8气缸体的94个尺寸。被检验的最大一种气缸体重达454公斤。检验速度为35件/小时。这台机器是作为重型 In the mid-1970s, the British company “Control Instrument,” offered a fully automated Sigma cylinder test machine for an engine shop in Detroit, which is said to be the largest and most advanced automatic test machine in the UK . This machine weighs 30 tons, 3.66 meters high, can test 94 models of four models V6 and V8 cylinder body size. The largest of the cylinders tested weighed 454 kg. Inspection speed of 35 pieces / hour. This machine is as heavy