Question

question 5 (1 point)
what is the measurement?

Explanation:

Step1: Identify the main scale and dial scale

The dial caliper has a main scale (the linear scale) and a dial (rotary) scale. First, we look at the main scale to find the integer part, and then the dial for the decimal part. The dial is marked with 0.001" per division (since it says \( 0.001" \) for the increment). Wait, actually, looking at the dial: the pointer is on the dial. Wait, first, the main scale: let's see the main scale. Wait, the main scale on the caliper (the linear part) – wait, maybe I misread. Wait, the dial caliper: the main scale (the fixed scale) and the dial (the movable scale with the pointer). Wait, actually, for a dial caliper, the main scale gives the whole number of inches (or fractions), and the dial gives the decimal part. Wait, the dial here: the pointer is at 70? Wait, no, wait the dial is marked with 0 - 100? Wait, no, the dial has 0, 10, 20, 30, 40, 50, 60, 70, 80, 90. Wait, the increment is 0.001" per division? Wait, the dial says \( 0.001" \) (the small text). Wait, maybe the main scale is in inches, and the dial is 0.001" per division. Wait, first, the main scale: let's look at the main scale (the linear scale on the caliper). Wait, the main scale has markings. Wait, maybe the main scale is 1.170"? Wait, no, let's think again. Wait, the dial caliper: the main scale (the fixed part) and the dial (the rotating part). The main scale: each major mark is 0.1" or 0.02", but with the dial, the dial has 100 divisions for 0.1" (so 0.001" per division) or 50 divisions for 0.1" (0.002" per division). Wait, the dial here has 0 - 100? Wait, no, the dial in the image has 0, 10, 20, 30, 40, 50, 60, 70, 80, 90. Wait, maybe it's a 0.001" dial caliper. Wait, the pointer is at 70? Wait, no, the pointer is at 70? Wait, the dial is marked with 0 at the top, then 10, 20, ..., 90. Wait, maybe the main scale is 1.1" (or 1.170"? Wait, no, let's check the main scale. Wait, the main scale (the linear scale) has markings. Wait, the main scale: the fixed scale. Let's see, the main scale (the part with the numbers 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100? No, the main scale in the image has numbers like 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100? No, the main scale (the linear part) is on the caliper, and the dial is attached. Wait, maybe the main scale is 1.1" (1 inch and 0.1"), and the dial is 70 divisions. Wait, if the dial has 100 divisions for 0.1" (so 0.001" per division), then 70 divisions would be 0.070". So total measurement is main scale + dial. Wait, the main scale: let's see, the main scale (the fixed part) has a mark at 1.1" (or 1.170"? Wait, no, maybe the main scale is 1.1" (1 inch and 0.1"), and the dial is 70 * 0.001" = 0.070". So total is 1.1 + 0.070 = 1.170"? Wait, no, maybe the main scale is 1.170"? Wait, no, let's check again. Wait, the dial caliper: the main scale (the fixed scale) and the dial (the rotating scale). The main scale: each major mark is 0.1", and between each major mark, there are 10 minor marks (so 0.01" per minor mark). But with the dial, the dial has 100 divisions for 0.1" (so 0.001" per division). Wait, the dial in the image has the pointer at 70. So the dial reading is 70 * 0.001" = 0.070". The main scale: let's see, the main scale (the fixed part) – the part where the dial is attached. The main scale has a mark at 1.1" (or 1.170"? Wait, no, maybe the main scale is 1.1" (1 inch and 0.1"), and the dial is 70 * 0.001" = 0.070", so total is 1.1 + 0.070 = 1.170". Wait, but maybe the main scale is 1.170"? Wait, no, let's think of the dial caliper: the main scale (the fixed scale) and the dial (the rotating scale). The main scale gives the whole number of inches (or fractions) and the dial gives the decimal part. So if the main scale is 1.1" (1 inch and 0.1"), and the dial is 70 divisions (each 0.001"), then 1.1 + 0.070 = 1.170". So the measurement is 1.170 inches.

Step2: Confirm the calculation

Main scale (fixed scale) + dial scale (rotating scale) = total measurement.
Main scale: Let's assume the main scale is 1.1" (1 inch + 0.1").
Dial scale: 70 divisions * 0.001" per division = 0.070".
Total measurement: \( 1.1 + 0.070 = 1.170 \) inches.

Answer:

\( 1.170 \) inches (or \( 1.170" \))