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Gage Block Stack for 1.3750 Inch
Gage block stacks › 1.3750 in
Fewest-block stack, 81-piece inch set
1.000 + 0.250 + 0.125 = 1.3750 in
3 blocks. Checked: the block sizes add up to exactly 1.3750 in.
This is the stack for a 1.3750 inch gage block height: a worked example for anyone who has the common 81-piece set and wants the answer without trial and error. 1.3750 in is the fraction 1 3/8". In millimetres, 1.3750 in is exactly 34.925 mm.
Step by step
Add the blocks from the finest increment to the thickest. After each block the "left to build" column shows what the remaining blocks must make up; it reaches 0 on the last block.
| Block added | Stack height | Left to build |
|---|---|---|
| 0.125 | 0.1250 | 1.2500 |
| 0.250 | 0.3750 | 1.0000 |
| 1.000 | 1.3750 | 0.0000 |
Other stacks for 1.3750 in (81-piece inch set)
- 0.950 + 0.300 + 0.125 (3 blocks)
- 0.900 + 0.350 + 0.125 (3 blocks)
- 0.850 + 0.400 + 0.125 (3 blocks)
More blocks means more wrung joints, so the shortest stack above is the one to prefer. These alternates help if a block in your set is missing or worn.
The same size in a 36-piece inch set
With the 36-piece inch set the fewest-block stack is 1.000 + 0.170 + 0.105 + 0.100 = 1.3750 in, 4 blocks, which is 1 more block than the 81-piece inch stack.
How to use this stack
- Pull the 3 blocks listed from your 81-piece inch set and check the sizes marked on each one.
- Wring the thickest blocks together first and add the thinner ones last. See how to wring gage blocks.
- Let the stack and the part reach the same temperature before measuring (temperature correction).
Check 1.3750 in in the free gage block calculator →
Prefer it filled in? Open the calculator with this size and set selected. Free, no login, works on a phone.
Related
- Gage block stack for 1.8125 in
- Gage block stack for 2.1875 in
- 81-piece inch set: all block sizes
- 36-piece inch set: all block sizes
- Fractional inch stack chart (1/16 in steps)
- All gage block stack pages
- Sine bar calculator (stack height for any angle)
- Gage block temperature correction
- How to wring gage blocks
- Gage block grades explained
Quick answers
What gage block stack makes 1.3750 in?
With the 81-piece inch set, stack 1.000 + 0.250 + 0.125. The blocks add up to exactly 1.3750 in.
How many gage blocks do I need for 1.3750 in?
The 81-piece inch set builds 1.3750 in with 3 blocks, the fewest possible from that set.
Can the 36-piece inch set build 1.3750 in?
Yes: 1.000 + 0.170 + 0.105 + 0.100, 4 blocks.