Thermometers with ground joint, DIN 12784 and DIN 12770, standard ground joint 14,5/23, enclosed scale type, capillary unbacked or luminous blue, filled with Hg or red/blue/green filling, upper section 11 mm dia., lower section 7 to 8 mm dia., Richter top, calibratable.
1) Acc. to DIN 12770
Installed length = Lower section + Ground joint
According to Commission Regulation (EU) no. 847/2012 of the European Commission of 19 September 2012, thermometers containing mercury shall not be placed on the market after 10 April 2014 except "thermometers exclusively intended to perform tests according to standards that require the use of mercury thermometers“. This transition rule applies until 10 October 2017; after this date, no mercury thermometers may be placed on the market in the EU.