Clearance Distance Definition:
The shortest distance through air between two conductive parts.

Model CCK-01 Creepage and Clearance kit:间隙测量全套设备
Kit contains all four of these valuable time saving tools... the CC-23 Feeler Gauge, the OCC-20 Optical Comparator, the 54-200-000 Digital Calipers and the 10-871-2 Digital Micrometer. Everything you need for Creepage and Clearance testing!

Model CC-23 Feeler Gauges:爬电距离量规
A MUST HAVE item for measuring creepage and clearance distances throughout your products Saves an invaluable amount of time measuring electrical spacings. Check insulation and other spacing in office machines, data-processing and medical equipment, power supplies, transformers, P.C. Boards, etc. These are the ONLY gauges available which are in the "Random" dimensions of the international Standards. Dimensions for the 23 individual gauges include (in mm): 1.0, 1.2, 1.4, 1.5, 1.6, 2.0, 2.4, 2.5, 2.8, 3.0, 3.2, 3.3, 3.5, 4.0, 4.5, 5.0, 5.6, 6.0, 6.3, 6.4, 6.5, 7.0 and 8.0. Each of these gauges and the attachments ring are made of resilient hardness Stainless steel.

Model OC-20 Optical Comparator:
The ONLY way to reliably measure narrow creepage distances between traces on printed circuit boards and within flex circuits. Comes with four separate reticles, all the most popular for engineers and technicians: 0.005 in/div; 0.1 mm/div; 1/64 in/div; and Degrees/div.

Model 54-200-777 Digital Caliper:
Fast, easy to use, accurate and with exceptional “user features”. Simply push one button to switch between inches and millimeters. Also has hold and floating zero features. Can be interfaced to a computer for measurement, monitoring, memory and provides a printout of its work. Case provided.

Model 10-881-1 Digital Micrometer:
The new breed of digital electronic micrometers featuring the latest state of the art in micro electronics. Simple to operate. Very accurate. Balanced for convenient single hand operation. Perfect for measuring insulation thickness! Includes hold and floating zero features. Furnished in fitted case.