Fowler is one of the most trusted names in precision measurement equipment. This affordable bore gauge takes precision measurements in the 1.4″-6″ range with 0.0005″ (0.001mm) graduations (higher precision achieved by judging position of needle between graduations), making it perfect for measuring the rod and main bores as well as cylinder bores on any Toyota/Lotus engine. Some people rely on plastigauge to check their oil clearances during a build but taking precision measurements of all of the parts and calculating the clearance is the best way to get the exact clearance and be sure your engine is built right the first time. This is how we measure all parts for our in-house engine builds.
This is the analog model so you must know how to read a micrometer to use it. Look it up online, it’s easy!