Abstract: Disclosed is a micrometer jig for measuring distances to close tolerances between a surface and a curved edge. The jig consists of a leg member with a socket at one end which slidably mounts an arm member in "T" relationship to the leg. A protractor housing is slidably mounted on the leg and pivotally mounts a protractor finger which projects from one side of the leg. A threaded stub shaft projects from the tail of the rotractor finger and carries a wing nut to releasably secure the finger in a particular angular disposition with respect to the leg member. The arm member carries a micrometer on the end adjacent the protractor finger so that accurate measurement can be achieved between a surface contacted by the micrometer and the apex of the angle formed by the leg member and protractor finger.

Abstract: A book support is swingably connected to a tray having end pieces which may be adjusted to support tray on a bathtub or on a bed. A stand or base member is also provided for supporting the tray in front of a seated person.