The body HCZ/T-AR-PT is in transparent polyamide based (PA-T/AR) technopolymer. Highly resistant to shocks, oils with additives, aliphatic and aromatic hydrocarbons, petrol, naphtha, phosphoric esters, additives and detergents containing alcohol. High UV resisyance. The protection frame is in glass-fibre reinforced polyamide based (PA) SUPER-technopolymer, black colour, matte finish. Supplied assembled, removable by a screwdriver. The packing rings is in step-shaped for the seal on the reservoir walls and NBR synthetic rubber O-ring screw underhead. Suggested roughness of the packing ring application surface Ra = 3 µm. The contrast screen white lacquered aluminium. The housing, in the appropriate external rear slot, guarantees the best protection from direct contact with fluid. It can be taken out from the inclined side, before assembly to allow the insertion of level lines or words. Incorporated thermometer for temperature reading. The standard executions HCZ/T-AR-PT zinc-plated steel screws, nuts and washers and HCZ/T-AR-PT-VT is in AISI 303 stainless steel screws, AISI 304 stainless steel nuts and washers. Thanks to the SUPER-technopolymer screws, HCZ/T-AR-PT-VT column level indicator can be used in corrosion resistance applications where stainless steel is not necessary.