TB 9-5210-208-35
(2) Reposition vernier plate to position that best compensates for errors at 0,
mid-range, and full range.
(3) Tighten screws to secure vernier plate.
9. Inside Scale Vernier Calipers
a. Performance Check
(1) Use appropriate size gage blocks to check, low-range, mid-range, and full-
range indications on TI "inside" scale.
(2) Assemble gage blocks as shown in figure 2 with an inside caliper jaw at each
end, which serves as an end stop. Wring blocks together firmly before applying tie rods.
Place nibs of TI jaws between inside caliper jaws of assembled gage block stack. If
reading is not within 0.001 inch of total length of gage blocks (for first 6 inches of beam
and 0.001 inch for each additional 6 inches of the beam), perform b below.
NOTE
Any adjustment made in b. below will change the performance of the outside
measurement function of TI.
b. Adjustments
(1) Loosen screws that fasten inside vernier plate to slide assembly.
(2) Reposition vernier plate to position that best compensates for errors at
minimum scale, mid-scale, and full-scale.
(3) Tighten screws to secure vernier plate.
(4) Repeat 8a(1) through (4) above.
a. Performance Check.
(1)
Close jaws of TI and set the dial calipers for 0 using the bezel ring on the
dial. The digital calipers are zeroed by pressing the Zero pushbutton.
(2)
Using the technique in 8a(2) and (3) above measure gage blocks at low-
range, mid-range and full-scale. TI will be within 0.001inch for first 6 inches and 0.001
inch for each additional 6 inches of beam length. No adjustment can be made.
11. Inside Function Dial and Digital Calipers
a. Performance Check
(1) Close jaws of TI and set the Dial Calipers for 0 using the bezel ring on the
dial. Pressing the Zero button zeros the Digital Calipers. If there is a minimum inside
nib width it will need to be added to reading.
