310 (leg) are all elements of the same (second) member 270. That is, they are elements of a unitary structure. The sliders 340 (discussed below) are the only movable elements relative to the second member 270, along the LA2 axis (discussed below).

The second member 270 is configured to move along the first leg axis LA1. That is the second member 270 is configured to move toward and away from the second end 230 of the first member 210,

The second leg 310 of the second member 270 includes a first slot 330 that extends along the second leg axis LA2. A first slider 340 (otherwise known as a marker or locator) is in the first slot 330, and a first scale 350 extends along an outer edge 310A of the second member 270.

In one embodiment, the first slot 330 is near the fourth end 320 of the second member 270. The second member 270 includes a second slot 360 that extends along the second leg axis LA2. As shown, the slots 330, 360 are colinear along the second leg axis LA2, and the second slot 360 is adjacent to the first slot 330, though this configuration is not intended on limiting the configuration options for the slots 330, 360, which, e.g., may be disposed at an angle to each other. The second slot 360 includes a second slider 370, and the first scale 350 extends along the first and second slots 360. The second slider 370 is used to measure the position of the third line relative to its sidewall. The second slider 370 in its slot 360 is further from the fourth end 320 of the tool 200 than the first slider 340 in its slot 330 because the first line is closer to its sidewall than the third line 150C because the third line 150C has to clear the counterweight 105 (see FIGS. 8A and 8B).

The second member 270 is configured for being in a first state shown in dashed lines in FIG. 4. In the first state, the first leg axis LA1 is parallel to the platform surface axis A2 and normal to the first member axis A1, and the second leg axis LA2 is parallel to the first member axis A1 and normal to the platform axis A2.

As seen in FIG. 4, the second member 270 has an L-shaped perimeter and more specifically an outer perimeter edge 275. The first and second members together define a z-shape when the second member 270 is in the first state.

As shown in FIG. 4A, the second member 270 is a plate having a top face 376 and a bottom face 378. The second member 270 defines a cross-member segment 379 along the inner perimeter edge 276 of the second member 270, between the first and second legs 280, 310 that is triangularly shaped to provide stiffness and support, e.g., to the second leg 310.

A third member 380 is connected to the second end 230 of the first member 210 and extends along the first leg axis LA1 from an axial inner end 382 at the second end 230 of the first member 210 to an axial outer end 384 that is against the bottom face 378 of the second member 270. The second member 270 is slidably connected to the third member 380 so that the second member is configured to move along the first leg axis LA1 relative to the third member 380. This movement is to accommodate different positioning of the front droplines relative to the front hoistway wall in different hoistways. In some instances, the second member 270 will be closer to the first member 210 (FIG. 4B) and in some instances it will be further from the first member 210 (FIG. 4C), and in each instance that adjustment is made between the second and third members 270, 380. However, for any particular hoistway, the position of the second member 270 relative to the first member 210 is fixed.

To move the second member 270 relative to the third member 380, the third member 380 has at least two holes 390A, 390B (generally 390) spaced apart from each other along the first leg axis LA1. The first leg 280 of the second member 270 has third and fourth slots 400A, 400B (generally 400) extending along the first leg axis LA1. The slots 400 are collinear with each other and adjacent to each other along the first leg axis LA1 so that the third slot 400A is closer to the first corner 300. Each of the third and fourth slots 400 includes a knurled-knob bolt 410A, 410B (i.e., first and second bolts 410A, 410B, generally referenced as 410) that extends into one of the threaded holes 390. The knobs may be threaded to enable fixing the location of the knurled-knob bolts 410A, 410B. From this configuration, the second member 270 is configured to slide along the first leg axis LA1 relative to the third member 380 and lock in-place against the third member 380.

In one embodiment, the first leg 280 includes a second scale 420 extending along the first leg axis LA1. Both scales 350, 420 are along the outer perimeter edge 275 of the second member 270.

Turning to FIGS. 5A, 5B, 6A, 6B, 7A and 7B, each of the sliders 340, 370 has a top (for first) member 450 disposed on the top face 386 of the second member 270 along the second leg 310 and a bottom (or second) member 460 disposed against the bottom face 388 of the second member 270, i.e., along the second leg 310. The top and bottom members 450, 460 of the sliders 340, 370 both have a triangular shape with an apex 470, that is directed along the first leg axis LA1, which is a depth direction D1 for the sliders 340, 370.

The members 450, 460 of the sliders 340, 370 have top and bottom surfaces 345A, 345B. The bottom surface 345B may be generally planar and the top surface 345A may be shaped the same as each other and may be arcuate and shaped with a top peak 345C for gripping by a user. This way, from the top or bottom of the tool 200, the sliders have the same appearance and usability by the user.

For each of the sliders 340, 370, one of the top and bottom members 450, 460 has first and second connecting slots 480A, 480B (generally 480) extending along a height direction H1 for the sliders 340, 370 and spaced apart from each other along the second leg axis LA2, which is the width direction W1 for the sliders 340, 370. Another of the top and bottom members has first and second legs 490A, 490B (generally 490) having a complementary position relative to the slots 480 extend from the bottom surface 345B and into the connecting slots 480. The legs 490 are flexible and ends 500 of the legs include outwardly extending first and second bosses