Cardio Calipers

On-Screen Electrocardiogram (EKG, ECG) Measurement

Cardio Calipers Specifications
Cardio Calipers To Use the Calipers drag them over the portion of a EKG you want to measure using the mouse. To extend the calipers drag the right hand side out using the mouse. The number in the text box will show the space being measured.

The Calipers have several buttons which may appear differently on different skins. The arrow buttons on the slider will allow you to move and rotate the Calipers to measure any distance. The Diagonally downward pointing arrow hides the Calipers in the System Tray.

All the controls can be accessed through the keyboard:

Arrow Keys Move Calipers
Shift + Arrow Keys Extend Calipers
Ctrl + Arrow Keys Move Calipers by 10 Pixels
Ctrl + Shift + Arrow Keys Extend Calipers by 10 Pixels
Shift + > Rotate clockwise
Shift + < Rotate counter-clockwise
C Cycle Color
K Cycle Slider Color
F Rotate to nearest 45 degrees
L Rotate to last 45 degrees
A Toggle Lock Angle
M Toggle Lock Measurement
N New Set of Calipers
U Cycle Unit of Measurement
Q Quit
H Hide in System Tray
F1 Show Help
Ctrl+C Copy Value to Clipboard
Ctrl+V Paste Value from Clipboard
Z Undo/Redo Movement
Doubleclick mouse Flip between horizontal and vertical
Right-click mouse Show Calipers menu

While Dragging the Base:

Shift Limit movement to 45 degrees
Alt Limit movement to angle

While Dragging the Slider:

Shift Lock Angle
Alt Lock Measurement
Ctrl Override 'Sticky Angles'

By typing a number and pressing 'Enter' the Calipers will extend to that distance. Simple calculations may be performed by typing -, +, *, or / and then a number, then 'Enter'; the Calipers will extend to the new relative position.

When Closed the Calipers sits in the System Tray

By Right-clicking anywhere on the face of the Calipers, or clicking on the System Tray icon the Calipers menu is displayed:

The menu is divided into four sections:

Skins Choose a new user interface
Transparency Make the Calipers see-through
Options Access more options

Additionally there are the options:

Show Millimeters Change Units measured to Millimeters
Show BPM Change Units measured to Heart Rate in Beats Per Minute
Show MilliSeconds Change Units measured to MilliSeconds
Show MilliVolts Change Units measured to MilliVolts
Set Calibration to 20mm Calibrates Calipers so that the current measurement corresponds to 20mm
Paper Options... Opens the Paper Options window to change mm per Second and mm per milliVolt
Sticky Angles Snap rotation to nearest 45 degrees
Lock Angle Lock angle when dragging
Lock Measurement Lock measurement when dragging
Exit Close the program

The Skins menu presents several different choices for the user interface of the Calipers. By choosing the "Get More Skins" menu item you will be taken to the Cardio Calipers skin webpage. This allows you to browse and download new skins. Full instructions are given on the webpage.

The Options menu contains a sub menu of the following options:

Stay On Top Controls floating above other windows
Show Color Bars Shows/Hides edge Color Bars
Show Tooltips Shows/Hides info popups for buttons
Run at Startup Opens Calipers when computer starts
Hide Splash Screen Hides the picture at startup
Center On Screen Moves the Calipers to screen center
Help Shows Help
Unlock Advanced Features Accepts your serial number
Visit Website Links to Caliper homepage

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