Keysight technologies u1270 series handheld digital multimeters keysight technologies u1273ax thanks to its ergonomic shape the u1273ax digital multimeter from the keysight technologies u1270 series fits in your hand securely and without slipping even when you are wearing gloves the large buttons ensure accurate usage while the casing is dust and splash resistant to ip54 offering protection even under the harshest conditions down to 40degc in winter you can prevent stray voltages by