Machine-DRO History - A division of Allendale Electronics, a family run British company founded in 2004. Our roots are firmly based in the UK, with a head office, engineering and inspection department at our works in Hoddesdon, Hertfordshire. We pride ourselves on being a measuring tool specialists offering tools, services, advice and expertise to our end customers and international distributor network.The horizontal digital indicator has 50 mm (2") of plunger travelThe operation of the plunger is parallel to the Horizontal LCD displayThe display can be set to zero in any position, and switch between metric and imperial readingThere is also an external data output interface via data cable (not supplied)The indicator has a mounting lug with two 6mm diameter fixing holesOne in the front and the other in the side of the lug. On the under side is a thumb screw to lock the indicatorA mounting stem is also supplied which fits into the lug to provide another mounting optionApplications includ