I have one of these--I do partial boils for small batches; heat water to dissolve honey for meads; and heat water for general cleanup. I brew in my workshop which doesn't have running water. I haven't checked it at mash temps but the specs say it can go down to 150*F

Presto Multi-Cooker/Steamer:
This handy multi-cooker roasts, braises, blanches, boils, stews, simmers, steams, and makes soups and casseroles. Maintain accurate cooking temperature using the Control Master heat control. Made of heavy cast aluminum, this versatile unit heats evenly and resists warping. And the Diamond Coat deluxe nonstick finish inside and out means you'll spend less time cleaning and more time enjoying the company of family and friends. Cooker is completely immersible with the heat control removed. Includes see-through glass cover and basket. (Item #188754) w7
Product Characteristics:
Model No.: 06000
Width: 13-in. (handle to handle)
Diameter: 9.5-in.
Height: 7.5-in.
Capacity: 6-qt.
Auto Shut Off: No
Adjustable Thermostat: Temperature range-150-400 degrees
Cleaning & Care: Dishwasher-safe
Volts/Watts: 120-volts / 1300-watts
Origin: USA