TB 9-5210-208-24
(4) Place inside of jaws of TI over ends of gage block working surfaces. If reading is
not within 0.001 inch of total length of gage blocks for first 6 inches of beam and r0.001
inch for each additional 6 inches of the beam, perform b below.
b. Adjustments
(1) Loosen screws that fasten outside vernier plate to slide assembly.
(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 r0.001 inch of total length of gage blocks for first 6 inches of beam and r0.001 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.
(3) Repeat 8 a (1) through (4) above, as necessary.
10. Outside 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.
The digital calipers are zeroed by pressing the Zero pushbutton.
(2) Using the technique in 8 a (2) and (3) above measure gage blocks at low-
range, mid-range and full-scale. TI will be within r0.001 inch for first 6 inches and r0.001
inch for each additional 6 inches of beam length. No adjustment can be made.