Honeywell T675A1425 temperature contol, 55F to 175F, with 20foot remote capillary sensor

Honeywell model T675A1425 Remote Bulb Temperature Control. Spdt switching with 3-12F adjustable differential. Range 55-175 F. 20 Ft. Copper capillary tube length. Used to regulate temperature of air or liquids in ducts, pipes, tanks and boilers.