The Grade Rod Game - Learn and Practice Reading a Grade Rod

Instructions:

• Learn to interpret elevation and distance measurements with this interactive tool. Practice using both Engineer's rods and Architect's rods.
• This game can be played using a mouse or a touchscreen.
• Press the Play Game button to begin playing the game.
• A measurement to select will appear.
• Computer: Move your mouse up and down the leveling rod and click when you think it is at the correct reading.
• Tablet or phone: Tap your finger on the spot you believe is correct.
• If needed, use the minus and plus icons to control the grade rod. You can also use your mouse wheel.
• When you think you have the correct answer, click or tap the Submit Answer button.
• For each correct answer, you will be awarded points. Your score is displayed on the left side of the Results Bar.
• Points are awarded based on the following table.

  Level	Time (Elevation)	Time (Distance)	Points
  1	20 seconds	40 seconds	10
  2	18 seconds	36 seconds	20
  3	16 seconds	32 seconds	30
  4	14 seconds	28 seconds	40
  5	12 seconds	24 seconds	50
  6	10 seconds	20 seconds	60
  7	8 seconds	16 seconds	70
  8	6 seconds	12 seconds	80
  9	4 seconds	8 seconds	90
  10	2 second	4 seconds	100

• Each time you correctly answer 5 times, you will advance to the next level. Your current level is indicated in the Results Bar.
• The timer is represented to the right of the score in the Results Bar. As time passes, the bar will get shorter.
• If you have not selected the correct measurement before the time runs out, you will receive a strike. After three strikes, the game is over. The number of strikes is displayed on the right side of the Results Bar.
• Click the Settings button to adjust your preferences for the game.
  • Timer: The default setting is On. Select Off to have unlimited time to submit your answer.
  • Sounds: The default setting is On. Select Off to disable all game sounds.
  • Type: Choose between an engineer's rod (decimal feet) or an architect's rod (fractional inches).
  • Measure: Choose whether you want to measure elevation or distance.
  • Mode: The default mode is "Find". You can also select "Type" mode, where numbers appear and you can enter your answer by clicking these numbers or typing with your keyboard. For an easier experience, select "Training" mode. In this mode, the current value of the pressure gauge is displayed between the plus and minus buttons.
  • The current settings are always displayed in the lower-left corner of the pressure gauge.
  • The settings you have selected are stored in your browser for the duration of your session. You can refresh your browser to start a new game, but if you close it, the settings will reset to default the next time you visit the game.
• When the game is over, a Wrong Answers button will appear. By clicking this button, you can review the questions you answered incorrectly in your last game.