When the thickness of the tooth unit moves closer to the tooth cavity and the needle moves in the "+". 1, 2 - measuring jaws; 3 - tip; 4, 5 - screws; 6 - the indicator; 7 - standard.
May be imposed by your post office or government agency in your country. The item "Dial Offset Gear Tooth Gauge M8-M40 (0.01mm) + Set of 15 Standards" is in sale since Sunday, July 10, 2016. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Inspection & Measurement\Inspection Gages".tools" and is located in Ukraine. This item can be shipped worldwide.