Three section prism poles gradutated in feet?
A three section, 15 foot prism pole is sometimes really handy. Our old one was really beat up and we got a new one. This new Seco is dual graduated in meters and feet which is fine; there are meters to ignore. What is not so fine is that it is PRIMARILY in meters, which is to say that the three section increments are exactly 1.65m, 2.65m, 3.65m, and 4.65m or ~5.41ft, ~8.69ft, ~11.98ft, and ~15.26ft. I was unable to find a three section prism pole graduated primarily in feet. Does anyone know if these are available and where to find them? Our old rod heights were 5.3ft, 8.4ft, 12.0ft, and 15.5ft.
Without a pole with more desirable, primarily feet graduation marks, what approach do people use with poles that are primarily metric? We could memorize those rounded numbers and use them. We could enter the rod height in the fieldbook and equipment in meters and let the computers convert it. This would look odd in the fieldbook since everything else is otherwise in feet and tenths. We could keep using our old pole which is in poor condition and not repairable.
Thoughts or ideas?
We use metric in all field work. It can be hard to find tools (measuring tapes, rods, etc) graduated only in meters. So I have the opposite problem.
Just use metric. Whit most DCs switching between US feet / Meters / Int Feet is just a button push away. Like John, I use metric for just about everything and then convert to the desired flavor of feet when required. It solves a lot of issues working in multiple states using different foot definitions.
Most every modern prisim pole has an adjustable prism bolt.
Basically it takes a thin nut to adjust to whatever height is required.
Some of our poles have stops. You could get them installed or install them yourself, they work really well and you can chose the height, that way you don't have to worry about slips.