Support group for land surveyors who still use HP48 and HP35 Calculators for Data Collection and in their daily surveying lives. Share tips tricks and software here.

Hello Everyone, In the calculator world HP has hit some Home Runs in its time. Starting back with the original HP 35 to the little HP 25 to the HP 67 to the HP 41cx and the well used HP 48 gx. Ever one i just mention was well used in the surveying world and many more that i left out. Some of these even came with surveying programs. Now the programming is left up to us. When i started writing RPN in 1976 I was amazed how this made my math much easier to do. Plus to know how correct it was. Then came the HP 41cx with the Survey Pac. , this was a dream come true. Then it was not to long the HP 48 appeared, then final the HP 48 gx with its program cards and the ram cards to back it up. SMI and TDS play a big part in the following years. If you used a Data collector that was a calculator, this was the dual role that it played. now the world has changed to more computer type collectors in the field. This also leaves the surveyor in the field wishing he or she had a calculator. This is how this gap is filled with the only RPN calculator made today. Some in the world do not use a RPN logic calculator. HP has even went so far as to have both modes for those who do not. There is nothing wrong with Algebraic expressions ,I just like RPN logic. There are less steps in programming. But on with this story on how this little calculator stack up with the models that came before it. Lets first look at programming, and this list may surprise you.Even for those who write RP Lisp. and the new HP PPL Language for HP Prime. The HP 35s. will surprise you.

You need to be a member of Land Surveyors United - Global Surveying Community to add thoughts!

## Replies

love it!

The HP 35s calculator is a powerful and versatile tool that can be used for a variety of applications, including land surveying. With its advanced features and intuitive interface, the HP 35s can simplify calculations, improve accuracy, and save time for surveyors in the field. In this article, we will explore the key features of the HP 35s and how they can be used for land surveying.

One of the most important features of the HP 35s calculator is its ability to perform complex mathematical calculations quickly and accurately. This is particularly useful for land surveyors, who often need to perform complex calculations involving angles, distances, and coordinates. With the HP 35s, surveyors can perform these calculations with ease, allowing them to work more efficiently and accurately.

Another key feature of the HP 35s calculator is its ability to store and recall programs and data. This can be particularly useful for surveyors, who often need to store and retrieve large amounts of data, such as survey measurements and calculations. The HP 35s can store up to 800 data points, which can be easily retrieved and used for further calculations or analysis.

The HP 35s also includes a range of functions that are specifically designed for land surveying. These include functions for calculating area, volume, and distance, as well as trigonometric functions for calculating angles and coordinates. The calculator also includes a range of units of measurement, including feet, inches, and meters, which makes it easy to convert between different units of measurement.

One of the key advantages of the HP 35s calculator for land surveying is its portability. Unlike other surveying tools, such as total stations or theodolites, the HP 35s can be easily carried in a pocket or backpack, making it ideal for use in the field. This means that surveyors can perform calculations and analysis on the spot, without having to return to the office or transport bulky equipment.

Finally, the HP 35s is also designed to be durable and reliable, which is essential for surveyors who work in tough conditions. The calculator is built to withstand shock, moisture, and dust, and is designed to operate in a range of temperatures. This makes it a reliable tool for surveyors who work in harsh environments, such as construction sites or remote locations.

In conclusion, the HP 35s calculator is a powerful and versatile tool that can be used for a range of applications, including land surveying. With its advanced features and intuitive interface, the HP 35s can simplify calculations, improve accuracy, and save time for surveyors in the field. Whether you are a professional surveyor or a student learning about land surveying, the HP 35s is a valuable tool that can help you to work more efficiently and effectively.

I would like to know more about HP 48 GX calculator. How it can be used as a data collector?

HI, The 48GX uses TDS or SMI program cards the TDS must have a ram card with it, the SMI can work with or without one. All mine where stolen but you can still find them. Good luck. the 48 was uses for many years as a data collector it is sad that HP has gotten out of the Survey industry.

The HP 35s is also gone, so there is no RPN calculator for surveying by HP.You may find one but it will cost $200.00 or more so Sit's good luck with your test.Amazon has both calculators if you do not have one.

Hi Everyone, Here are some more HP 35 programs, You Math and Science students will love these.

They are by Dr.D.G. Simps,on Physical Science and Engineering of Prince George College. Label DVI programs.

http://www.pdfdrive.net/hp-35sbook-calculatrices-hp-e13448446.html

Hi Everyone, Using a calculator, it seems you always run out of program Labels Except on the 41 Cx, of course i am talking RPN programs, The HP 32 only had 26 or A thru Z the same for the 33, But things changed on the HP 35s. Now you can use program line numbers,this has been on other Hp calculators,But the 32 and the 33 were limited by A thru Z, But using these line numbers lets you have more program labels. also if you still get low, you can always piggyback a program. Chose a program and one with a End return ,RTN, then add line 2, after the RTN, it will now be line ? , but remove the label of your piggyback , now this program is like a subroutine , but it is not because this piggy program can not call the piggyback, when you add the RTN to the piggyback, there is where it will stop and will XEQ on the line you first added as the piggyback ,that is your programs new Label. Say your first program is A001,the RTN was line A084, then your piggyback will be A085, then to run that program you just XEQ A085. Of course your old label ?001 will not be used, But now you have it for a new unused Label. And that's how you piggyback, to get back a label if you need one. On the HP 35s.

thanks for sharing Mr.Billy

Hi Everyone this is a cool Program, For Polar to Rectangular and vice versa, even though it uses Vars in the program. It is still cool. I also wrote a program using Vars. for this .But like this one a lot.

So Check it out. your only using P001 and P023,

but you never call it, just P001, -1, and 1

Load Program

key in 3, then ENTER,key in 4

XEQ P001 ENTER, prog.runs, 3.000.-1 , -1 is for R<>P

R/S, answer =5.0000,36.8699

Run again,

key in 5, ENTER,key in 36.8699

XEQ P001 ENTER,prog. runs,5.000, -1, this time +/- (CHS) 1 is P<>R

R/S, answer = 3.0000, 4.0000

How cool is that, -1 = R<>P and 1 = P<>R

Thanks MR. Harris

HI Everyone, the never ending story of Polar to rectangular, and vice versa. how many of these programs can be wrote, it never ends ,so here is one more way. This program is by Mark Hays Harris, I think it is a beta ???,

P001 LBL P

P002 x<> F ; parameter for determining R<>P vs P<>R

P003 CLx

P004 -1 ; less than zero (default) R<>P X in x, Y in y

P005 STOP ; give the operator a chance to change the parm use [+/-] key

P006 x>0? ; branch around R<>P routine

P007 GTO P023

P008 x<> F

P009 STO X ; Entry Point for R<>P routine

P010 x^2 ; compute R value to be placed in y Y

P011 x<>y

P012 STO Y

P013 x^2

P014 +

P015 √ ; use square root key

P016 STO R ; save R to R

P017 RCL Y ; compute theta , R is lifted to y

P018 RCL X ;

P019 /

P020 ATAN

P021 STO A ;save theta in A (P y holds R, x holds theta

P022 RTN ; END R<>P routine

P023 x<> F ; Entry Point P<>R routine

P024 x<>y ;might have been able to use REGx REGy here...

P025 STO R ; save R from y

P026 x<>y ;

P027 STO A ; Save A (theta) from x

P028 SIN

P029 * ; multiply compute y

P030 STO Y

P031 RCL R ;

P032 RCL A ;

P033 COS

P034 * ; multiply compute x

P035 STO X

P036 RTN ; END P<>R routine y holds Y, x holds X

LN=110 CK=0E3B

I have not tried it yet. but you can see it also here at this link,but you have to be a member ,so just join.

http://www.hpmuseum.org/forum/thread-2924.html

see what everyone has to say about it!!! I think i like to try it.

Fantastic,Mr Harris, Just one more i will add to something, now who's next ???

you get a Big Kudos, what a Great program.

Hi Everyone , Here is a video, on how to use a RPN calculator, it short but can help some one. and it is using the HP 35s.

https://www.youtube.com/watch?v=0xDo05UwkYU

Next