Delmhorst Blade Type Electrode with 5inch Blade and 35 Degree Angle Vacuum Hose Accessories Cool Cuffs ducting and appliance panels are

ducting and appliance panels are all commonly aluminium and all commonly adjacent to the surfaces you are cleaning after a fire

Their suggested spares schedule lists it against every machine in the range:

An injection sprayer left loose in a van is a bottle of concentrate lying on its side

Prevents burned hands

Delmhorst Blade Type Electrode with 5inch Blade and 35 Degree Angle Vacuum Hose Accessories Cool Cuffs ducting and appliance panels areAngled blade electrode for baseboards, mouldings and trim Two 5 inch blades bent to a 35 degree angle, Teflon coated except for the last 1 2 inch at the tips. The angle is the whole point it lets you get a reading behind a skirting board or under a sill plate without removing anything. Fitment Connects to any Delmhorst meter with an external electrode socket, including the BDX 30 and BDX 20 Blades 5 inches long by 1 1 4 inches wide (127 mm x 32 mm),