Kohlsman? Dunno really, just some guy, you know. Inventor of sub scales. <g> bones -----Original Message----- From: jhb_airlines-bounce@xxxxxxxxxxxxx [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of FrankTurley@xxxxxxx Sent: 16 November 2006 08:49 To: jhb_airlines@xxxxxxxxxxxxx Subject: [jhb_airlines] Re: A question of altitude In a message dated 16/11/2006 01:58:52 GMT Standard Time, bones@xxxxxxx writes: Here's a bit of code for an Altitude Alerter which might be suitable for cobbling.. Thanks Bones. I'd started doing some design notes, but not the coding, so I've printed your code out to add to my notes. Just for interest, who was Kohlsman ? Frank T.