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Calculator "Engineering" mode on display (FSE button): Anybody know which calculators have it?

To my knowledge, the only calculator in the world that has is an old Sharp EL506A. I have one but they keep getting lost. This feature always displays answers with the exponent in 3, 6, 9 or -3, -6, -9 etc, to correspond with milli, micro, nano, etc. Most calculators FSE buttons just alternate between fixed and scientific. Its very irritating to get an answer like 1E-7, when I want to know how many microfarads a capacitor is (0.1E-6).

Public Comments

1. There are a number of calculators on the market that have the engineering mode, where the answer is displayed in a set number of digits and the exponent is in powers of 3. Check out the TI-83/84, the HP 48gx or HP48g+ - and I am confident Casio also makes one. You may not see the FSE button you speak of from the old Sharp, but there are ways to program it.
2. A whole LOT of calculators have the engineering mode of the scientific display, most notably, the Hewlett-Packard line, which ALWAYS has had the engineering mode (exponent always a multiple of 3) for scientific display, ever since the 1st, the HP-35, introduced in 1966. Most of the scientific calculators from Texas Instruments (TI) also had a ENG option for the display. This is not rare, but rather is common for advanced scientific hand-held calculators. By the way. HP has the best buttons of ANY hand-held calculator on the market, past and present!