Sometime around WW1 Brown & Sharpe introduced the No. 11 micrometer. At that time it wasn’t called the No. 11. It was called the “Rex”. The only Rex in my collection is so horrid looking that I have to include some catalog pages. Besides, there are 3 different frame variations. Below is a catalog page […]

Below is a micrometer caliper. In particular , this is a one inch outside micrometer caliper. It measures outside dimensions from zero to one inch by thousandths of an inch. A two inch outside micrometer would measure from one to two inches, and a three inch from two to three inches, etc. This particular “mic” was […]