Anyone have any specific knowledge/experience of ultrasonic measures?

I'm looking for a simple accurate way of measuring things like door frames,
alcoves, cupboard interiors etc rather than complete rooms.

Most seem to have a minimum range of 60cm which is fine, maximum range
whatever. Like one with a laser pointer to make life easier.




--
Dave - The Medway Handyman
www.medwayhandyman.co.uk