NF C61-314 C4A Gauges for minimum opening contact tubes 3.94mm SC-NFC4A

NF C61-314 C3F Gauges for distance to point of first contact 16A 5.75mm SC-NFC3F

NF C61-314 C3E Gauges for distance to point of first contact 16A 5.60 mm

NF C61-314 C3D Gauges for distance to point of first contact 16A 5.45 mm

NF C61-314 C3C Gauges for distance to point of first contact 6A 5.25mm

NF C61-314 C3B Gauges for distance to point of first contact 6A 5.0mm

NF C61-314 C3A Gauges for distance to point of first contact 6A 5.75mm

NF C61-314 C2 Gauges for size of entry holes for plug pins 16A 5.8mm

NF C61-314 C2 6A Gauges for size of entry holes for plug pins 6A 5.3mm

NF C61-314 C1 16A Gauge for checking impossibility of single-pole insertion of plugs

NF C61-314 C1 6A Gauge for checking impossibility of single-pole insertion of plugs