A few years ago I was involved in a job that required inside residential buildings measurements. Within an inch or so was ok but due to furniture etc. using a tape was awkward. I bought and used a Bosch DLR165 and was very happy with it. For outside measurements I carried an aluminium clipboard and targeted that with the Bosch. It worked very well except in bright sunlight.

The Bosch was expensive but measured far more accurately than I required.

John.