HP71B EPROM SCP1C...

[d b]

That was a good call from Mark. You can check.

If his guess is right there will be prompts for such things as North, East, & Elevation. State, Zone, and maybe even Transverse Mercator or Lambert if it is lower level (better!). Outputs would have labels Northings and eastings and maybe if it's for layout it could have Theta angles and distance corrections given.

These may be shortened. Surveyors can't spell but we can abbreviate the hell out of anything. You would too if you had to take 400 topo shots per day and write electrolieer, eucalyptus, and 5 ft ofset to B alignment centerline on each one of them.