Greisinger digital precision quick response thermometers for thermocouples greisinger gmh 3250 the greisinger gmh 3250 is a digital precision quick response thermometer for thermocouples this thermometer is able to use five different thermocouples types j k n s t the connection is via miniature thermocouple connector the two line display keypad and dust tight enclosure allow a user friendly and reliable operationthe thermometer is suitable for all quick response high precision te