1. The Letter Report When is it appropriate? Who is the audience?

2. Characteristics 3-5 pages 0-3 tables or figures emphasize important points avoid details choose words carefully avoid repetition Concise Writing!

3. No Title Page no title authors sign letter date is in letter format affiliation is in letterhead position is with signature

4. No Headings or Numbered Sections no table of contents no list of figures no list of tables no list of references Use footnotes

5. Summary and Introduction no separate sections must present purpose and state important results early in the paper (first paragraph) lacks repetition of a formal report

6. References treated as footnotes only a few references no list of references

7. Tables and Figures same format as in other reports Few in number! Only the important ones should be self-contained documents place at end of letter or within letter

8. No Nomenclature Section all symbols must be defined as they are introduced use only important equations

9. Backup Information raw data calculations error analysis experimental equipment experimental procedures

10. Outline recipient and address salutation project objective important results description of experimental procedures -very brief, innovative techniques, problems encountered

11. Outline continued results - analysis - discussion recommendations signature

12. 205 East 2nd South Apt 6 SLC, Utah 84103 February 6, 1992 Professor Noel de Nevers Department of Chemical Engineering University of Utah Salt Lake City, Utah 84112 Dear Dr. de Nevers: During the period from January 6 to January 27, 1992, the members of Group F calibrated and evaluated the performance of an Omega Model HX93V relative-humidity and temperature transmitter (Omega Engineer., Stamford Connecticut). The transmitter was calibrated with an Omega HX92-CAL relative-humidity calibration kit, and its accuracy was tested with various solutions of ethylene glycol and water ranging from 10% to 100% relative humidity (RH). The transmitter was accurate to within 5%

13. RH at higher relative humidities (>50%) but was not accurate to within 5% RH at humidities lower than 50%. The transmitter's performance in a moving airstream at temperatures greater than room temperature was also investigated. A cardboard tube and an air blower containing a heating element supplied a suitable stream of heated air. A brief summary of the calibration and the results of our performance evaluation follow: …….