Thank you Chris.We'll give it a try.CheersDerek

Thank you all.We'll give it a go.Stay tuned.Cheers,Derek

Jim-Next time you go by a mirror, look intensely at a very bright laddie !CheersDerek

Expansion/contraction is best seen using an elastic band with marks on it so you 'see' what is happening when the elastic is stretched (due to heat) a...

Dan-In Ontario it is usual to tie in/allow for the foundation as the delimiter thus allowing reasonable overhang by the cladding/eaves.Some ZBLs allow...

My Dear Friend -Kent's clinometer is in for its Spring oil change and grease job.In due course, once he has finished collating the peach tree petals f...

BP-I was hoping a wag would say "Tiz Johnny Applestone's doing" !Buried stone a mystery - DEREK G. GRAHAM OLS OLIP, 2012-02-26, 13:33 […] (Land Survey...

Matt-I believe Topcon has the patent/license for the tribrach with the optical plummet.Maybe keep it for parts unless ........... ?It certainly is a P...

Summer 1958 @ age 14.5 within first week of being with my uncle, I showed great depth of instrument handling knowledge by leaning it up against a wall...