Mounting Flange For Use With Sighting Tubes (E-Mst); 30Cm (12") Sighting Tube, Ceramic Up To 1500°C/2730°F (E-Stc12); Figure 74: Adjustable Pipe Adapter (E-Apa); Figure 75: Mounting Flange For Sighting Tube (E-Mst) - Fluke endurance series User Manual