Electronics Inc. • (574) 256-5001 • www.electronics-inc.com
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Indicator Battery
Batteries should be replaced annually or during calibration. The warning symbol “bA Lo” appears on the digital
indicator when the batteries are low. Two (2) CR2450 lithium cells are required. Set-up and calibration information
are saved during battery replacement.
As Found
The “As Found” readings are the initial observations of the gage. These are made before any adjustments are made
(including adjustments to the Spindle Starting Position) and entered into the appropriate cell on the Certification
form. If no adjustments are made, these values are then copied into the “As Returned” columns of the form. Note:
If adjustments are made, the new value must be within tolerance allowed and entered into the “As Returned”
section. If adjustments cannot bring the gage reading into the allowed tolerance, the gage must be returned for
repair to Electronics Inc.
As Found Spindle Starting Position
Read and record the Spindle Starting Position in the “As Found” column before making any step block readings. Do
not adjust the Spindle Starting Position regardless of the setting since this could affect the actual “As Found”
conditions for other measurements. Place a calibrated flat surface, such as a step block or the flat side of the
curved check block, on the Almen gage head. Press and hold the “ZERO/ON” button to place the indicator into the
True Spindle Position mode (the “x1” on the bottom of the indicator screen will disappear). The value now shown
in the display is the Spindle Starting Position.
Step Block Readings
Five (5) step blocks are used to display the indicator accuracy over the expected range of travel (-0.200 mm to +
0.600 mm or -0.005 inch to + 0.025 inch, depending on which kit option used). Note: The .200 mm or the 0.005
inch step blocks may be used in reverse order to achieve negative calibration readings.
Place a step block on the gage head and slide it against one side of the end post, allowing the indicator tip to touch
the flat zero reference surface of the step block (not the recessed step). Press the “ZERO/ON” button to acquire a
zero in the indicator display. Next, slide the step block to the other side against the opposite end post to allow the
indicator tip to extend into the recessed step. Read and record the value shown in the indicator display in the “As
Found” column. Repeat the procedure and record the values for the remaining four (4) step blocks. Use the 0.200
mm or 0.005-inch step block in reverse sequence to check the negative range of the indicator.
Photograph on left: Place the step block to one side, allowing the indicator tip to touch the flat zero reference surface of the step
block. Photograph on right: Slide the step block to the other side to allow the indicator tip to extend into the step.
