Martindale LOK6 Universal Fuse Carrier Isolation Lock BSPT The clear LCD display shows

The clear LCD display shows the reading in ppm

Designed in Martindale’s distinctive yellow casing with a clear blue label

helping to prevent serious electrical hazards

and it's easy-to-use probe mounting on the rear of the tester

Martindale LOK6 Universal Fuse Carrier Isolation Lock BSPT The clear LCD display showsMartindale LOK6 Universal Fuse Carrier Isolation Lock Suitable for use with Red Spot and other similar style fuse holders. Extendable for use with fuse holders from 20A to 100A Description The LOK6 is a universal locking off device for fuse carriers. Designed to restrict finger access to live contacts and prevent the reinsertion of a fuse whilst maintenance is in progress, the LOK6 is ideally suited to Red Spot and other similar style fuse holders.