3D Instruments
ACR Systems Inc
Alpha
Autonics
Chemline
DGH
Drexlebrook
Dwyer
Edgetech
Fluke
Fuji
Functional Devices
Greyline
Hart Scientific
Inor
Konbo
L J Star
Omnex
Optech
Partlow
Phoenix Contact
Precision Digital
QEL
R Stahl
Raytek
Rotronic
Setra
Sponsler
Universal
Weksler
Yokogawa

Handheld Standards Thermometers 1521 and 1522