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I need to allow the user to enter co-ordinates in one of three ways.

  1. DD.DD.D Decimal Degrees
  2. DD MM SS Degrees, Minutes and Seconds
  3. DD MM.M Degrees and Decimal Minutes

So, I envisage either a tab (with the three options) or a dropdown. I will try both and let the client choose.

The client has said that they are happy to use a keypad to enter two of these formats. But for the Decimal Degrees they would like a set of tumblers or spinners.

I am not happy with the two extreme forms of entry. Is there another method to enter format 2 and 3, keeping in mind that there will be 60 positions if tumblers are used (instead of 10)

Note these are examples from the web. They are not my layout.

Illustration of a possible layout

tab selection

Example of Tumblers

enter image description here

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I am not happy with the two extreme forms of entry.

By "extreme forms" you mean the contrast between 60-position tumblers and manual keypad entry (which is more error-prone)?

f you want to keep the spinner. why don't you separate it?

Instead of a single spinner with 0-60 options (61 choice). split it into two spinners 0-5 (tens) and 0-9 (unit) this reduces to 17 choices

Note: if "60" is limit, not 59, you did more work on disable the unit spinner (well its less work than handling format of keypad typing)

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