第136章 近视眼镜
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烈日当空，树上的鸣蝉扯着嗓子叫个不休，不知哪里荷叶下的青蛙偶尔有气无力地和一声。更多小说ltxs520.com。就连从池塘上吹来的风，也是带着滚滚热气，再没有一丝清凉。
好在徐平早有准备，让人在凉亭上面接了竹管，引附近冰凉的井水过来。水到了凉亭上，便从东南西三面奔洒，把热‘浪’全部挡在了凉亭外。
今天是刻漏社第三次聚会的日子，人员全部聚齐。
孙七郎和李胜荣两个人蹲在一边的地上，小心地摆‘弄’着各种木制的零件，年轻的苏颂弯腰在一边看。旁边的桌上，郭谘认真地在看图纸。
&nb—sp;燕肃坐在中间，一会看看装零件的，一会又凑到郭谘身边看看图纸。
徐平没有想到李胜荣有这个本事，按照自己画的示意图，竟然在极短的时间内就用木料制了小样出来。今天他们便是要用这些木制零件，装出刻摆的样品来。
前世带来的习惯，徐平更在意纸上作业，总是要把图纸画得完全，去制作真正的样品，而不喜欢用木样。奈何能够接受徐平这观点的只有郭谘一人，也只有他现在能够真正理解三视图，并且开始学着自己画了。燕肃当年制莲‘花’漏的时候，便就是先制作木样，跟真的一模一样，没有问题了才动手制作真品。
一是画图的方法还很原始，不能完整表达设计意图，再一个制作真正样品的费用不菲，大家习惯了谨慎。现在的机械零件，大量使用的还是铜料，钢铁由于加工手段的关系，用的并不多。没有可靠的机‘床’，徐平也无法改变这一点。
几个铜钱大家不觉得，但一旦几斤几十斤地使用铜，很多人就受不了了。
苏颂由于受燕肃的影响，也把心思放在了制作木样上，对画图并不上心。
在凉亭的另一边，徐平小心地摆‘弄’着石桌上面的一小包玻璃镜片，对旁边的卫朴道：“你在石凳上坐好，两眼平视你的前方。——平视，脑袋不要‘乱’动，更加不要转头看我！对，对，就是这个样子，稳住了，不要动！”
说完，徐平挑了最薄的一个镜片拿在手里，另一只手拿了一个小木勺，起身走到卫朴的身边。先用小木勺捂住卫朴左眼，口中道：“千万稳住，不要‘乱’动，听我吩咐！”
一边说着，一边把镜片放到卫朴眼前，才对凉亭另一边的楚衍道：“楚大监，把手里的纸举起来，让卫朴辨认。”
楚衍听了，便把自己手里的一张纸拿在‘胸’前，仔细展得平了。
徐平又对卫朴道：“你透过眼前的这小玻璃片，看楚大监‘胸’前纸上的字样。贾主簿指到哪个你便认哪个，纸上面都是‘山’字，你只管说开口朝向就好。”
说完，徐平对楚衍身边的贾宪点了点了头。
贾宪咳嗽一声，拿起手里的小竹竿，指着纸上面最顶部的一个字问道：“朝哪里？”
卫朴眯着眼睛仔细辨认了一会，突然兴奋地道：“朝上！——我竟然看清了！”
徐平摇了摇头：“最上面的字最大，你辨认还是如此艰难，这个不行。”
说完，把手里的玻璃片从卫朴的眼上拿走，放到了旁边的石桌上。
卫朴好几年来，今天是第一次看眼前事物如此清晰，徐平一拿走，不由心中大急。
徐平从桌子上又挑了一个厚不少的镜片过来，重放到卫朴眼前，让他再次辨认。
这个年代又没有光学验光，没有电子验光，只能使用这种原始的方法来配近视眼镜。直试了五六次，才为卫朴选定了合适的镜片。徐平估‘摸’着，带上眼镜之后，卫朴的视力能够达到前世所说的一点一一点二的样子。他的近视太厉害，也只能如此了。
卫朴站起身来，满眼热切地看着徐平手里的镜片。
徐平对他道：“这东西你现在还用不得，得到场务里找高手匠人装进镜框里，才能配带。这是眼镜，以后有了这物，你就不会看不清子。”
卫朴乖巧地点了点头：“我知道，朝里的几位相公，都带着眼镜上朝呢！先生带我去看宣德‘门’的钟鼓，我远远地看见过！”
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